Warren: Sanders 'has a lot of questions to answer' about supporters' attacks

LAS VEGAS — Bernie Sanders "has a lot of questions to answer" regarding how his supporters attacked members of the Culinary 226 union online after they criticized his Medicare For All healthcare plan, Elizabeth Warren said Monday.

"I've said before that we are all responsible for what our supporters do, and I think Bernie has a lot of questions to answer here," Warren told NBC News in an interview in which she offered rare criticism for her fellow progressive, Sanders.

"I am particularly worried about what happened in the attacks on members of the culinary union, particularly on the women in leadership," Warren said. "That is not how we build an inclusive Democratic party. ... We do not build on a foundation of hate."

Members of the union that represents 60,000 workers in Nevada’s gaming and hospitality industries said this week that Sanders' supporters had "viciously attacked" its members after leadership warned about the risk to their negotiated health plans under a Medicare for All system.

Sanders has said the attacks on Culinary leadership were "not acceptable."

"I don't know who these so-called supporters are,” he told PBS in an interview Thursday. "We're living in a strange world on the Internet. And sometimes people attack people in somebody else's name. But let me be very clear. Anybody making personal attacks against anybody else in my name is not part of my movement."

While Warren isn’t the only candidate to criticize how Sanders has handled the so-called “Bernie Bros” online culture — former Vice President Joe Biden also urged Sanders to take accountability for “misogynistic” attacks — it marks a new willingness to draw stark contrasts with Sanders at a crucial point in the Democratic primary race. Warren finished third in the Iowa caucus and fourth in New Hampshire and is looking to reinvigorate her campaign in the upcoming Nevada, South Carolina, and Super Tuesday contests.

That could begin with an appearance on the debate stage; the cycle’s ninth gathering of candidates, this one hosted by NBC News and MSNBC. And after Sen. Amy Klobuchar boosted her fortunes with a strong debate performance in New Hampshire, the pressure is on for candidates to deliver.

But some Warren supporters wonder if being more “aggressive” on the stage is a winning formula.

"I think women get a bad rap when they are aggressive," Sandy Laboy said Monday at a Warren campaign event.

"This is what women face all the time," Warren said. “It's always too much of this or too much of that. But you put your head down, doing your job and you keep on going. Or you might say: We persist.”

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New Hampshire's 2020 Democratic primary election
Democratic presidential hopeful Vermont Senator Bernie Sanders speaks at a Primary Night event at the SNHU Field House in Manchester, New Hampshire on February 11, 2020. - Bernie Sanders won New Hampshire's crucial Democratic primary, beating moderate rivals Pete Buttigieg and Amy Klobuchar in the race to challenge President Donald Trump for the White House, US networks projected. (Photo by TIMOTHY A. CLARY / AFP) (Photo by TIMOTHY A. CLARY/AFP via Getty Images)
Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg speaks to supporters at a primary night election rally at Nashua Community College, Tuesday, Feb. 11, 2020, in Nashua, N.H. (AP Photo/Andrew Harnik)
CONCORD, NEW HAMPSHIRE - FEBRUARY 11, 2020: At her election night party, Democratic Presidential Candidate Senator Amy Klobuchar speaks to her supporters on New Hampshire primary night in Concord, New Hampshire on Tuesday February 11, 2020. (Photo by Melina Mara/The Washington Post via Getty Images)
MANCHESTER, NEW HAMPSHIRE - FEBRUARY 11, 2020: At her election night party, Democratic Presidential Candidate Senator Elizabeth Warren speaks to her supporters on New Hampshire primary night in Manchester, New Hampshire on Tuesday February 11, 2020. (Photo by Melina Mara/The Washington Post via Getty Images)
Democratic presidential candidate, former Vice President Joe Biden, greets supporters at a campaign event in Columbia, S.C., Tuesday, Feb. 11, 2020. (AP Photo/Gerald Herbert)
KEENE, NEW HAMPSHIRE - FEBRUARY 11: Democratic presidential candidate Andrew Yang take a photo with supporters who are holding campaign signs in front of a polling station on February 11, 2020 in Keene, New Hampshire. New Hampshire holds its first in the nation primary today. (Photo by Justin Sullivan/Getty Images)
Voting precinct workers take a group photograph together before opening their doors for the New Hampshire Primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by his wife Jane Sanders, right, meets with people outside a polling place where voters will cast their ballots in a primary election, in Manchester, N.H., Tuesday, Feb. 11, 2020. (AP Photo/Matt Rourke)
A woman takes a Democratic ballot to vote in the New Hampshire Primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
A voter steps from a booth after casting a ballot in the New Hampshire primary, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Matt Rourke)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by Rep. Alexandria Ocasio-Cortez, D-N.Y., left, takes the stage at campaign stop at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by his wife Jane Sanders, depart after meeting people outside a polling place where voters cast their ballots in a primary election, in Manchester, N.H., Tuesday, Feb. 11, 2020. (AP Photo/Matt Rourke)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., meets with people outside a polling place where voters will cast their ballots in a primary election, in Manchester, N.H., Tuesday, Feb. 11, 2020. (AP Photo/Matt Rourke)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by his wife Jane Sanders, depart after meeting people outside a polling place where voters cast their ballots in a primary election, in Manchester, N.H., Tuesday, Feb. 11, 2020. (AP Photo/Matt Rourke)
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., greets supporters outside a New Hampshire primary polling location, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Holly Ramer)
Residents arrive to vote in the New Hampshire primary at Bishop O'Neill Youth Center, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
An election worker holds a roll of "I Voted" stickers during the New Hampshire primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Brad Parscale, campaign manager for President Donald Trump, left, wears a red had that reads "Keep N.H. Great" as he arrives to speak on SiriusXM Satellite Radio at the Red Arrow Diner, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Brad Parscale, campaign manager for President Donald Trump, center, wears a red had that reads "Keep N.H. Great" as he arrives to speak on SiriusXM Satellite Radio at the Red Arrow Diner, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Samantha Murch, center, accompanied by her two boys Alexander, 8, and Jacob, 11, left, steps out of the voting booth for the New Hampshire primary at Bishop O'Neill Youth Center, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Samantha Murch accompanied by her two boys Alexander, 8, center, and Jacob, 11, left, votes in the New Hampshire primary at Bishop O'Neill Youth Center, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg meets with people outside a polling place where voters will cast their ballots in a primary election, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Matt Rourke)
Supporters of Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg gather outside a polling place where voters will cast their ballots in a primary election, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Matt Rourke)
Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg meets with people outside a polling place where voters will cast their ballots in a primary election, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Matt Rourke)
A sign that reads "Vote! Pick Up Ballot Here" is displayed at a voting precinct for the New Hampshire Primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
A man arrives to vote in the New Hampshire Primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Residents stand in voting booths to vote in the New Hampshire Primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
A voter steps out of the booth after casting her ballot in a primary election, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Matt Rourke)
Democratic presidential candidate former South Bend, Ind. Mayor Pete Buttigieg speaks at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Actor Kevin Costner introduces Democratic presidential candidate former South Bend, Ind. Mayor Pete Buttigieg at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg, left, waves with his husband, Chasten at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by Rep. Alexandria Ocasio-Cortez, D-N.Y., left, takes the stage at campaign stop at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Rep. Alexandria Ocasio-Cortez, D-N.Y., speaks at a campaign rally for Democratic presidential candidate Sen. Bernie Sanders, I-Vt., at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Harvard Professor Cornel West speaks at a campaign rally for Democratic presidential candidate Sen. Bernie Sanders, I-Vt., at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Harvard Professor Cornel West speaks at a campaign rally for Democratic presidential candidate Sen. Bernie Sanders, I-Vt., at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Julian Casablancas, lead singer of The Strokes, performs after Democratic presidential candidate Sen. Bernie Sanders, I-Vt., speaks at a campaign stop at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate former Vice President Joe Biden, takes photos with Sara Nidua, 17, center, and Emma Bloom, 18, right, high school students visiting from New York, during a campaign event at St. George Greek Orthodox Cathedral, Monday, Feb. 10, 2020, in Manchester, N.H. (AP Photo/Pablo Martinez Monsivais)
Democratic presidential candidate Sen. Elizabeth, D-Mass., greets supporters at a town hall campaign event, Monday, Feb. 10, 2020, in Portsmouth, N.H. (AP Photo/Robert F. Bukaty)
Democratic presidential candidate Sen. Elizabeth, D-Mass., speaks at a town hall campaign event, Monday, Feb. 10, 2020, in Portsmouth, N.H. (AP Photo/Robert F. Bukaty)
Democratic presidential candidate Sen. Elizabeth, D-Mass., speaks at a town hall campaign event, Monday, Feb. 10, 2020, in Portsmouth, N.H. (AP Photo/Robert F. Bukaty)
Democratic presidential candidate Sen. Elizabeth, D-Mass., speaks at a town hall campaign event, Monday, Feb. 10, 2020, in Portsmouth, N.H. (AP Photo/Robert F. Bukaty)
A woman takes a Democratic ballot to vote in the New Hampshire Primary, Manchester, N.H., graphic element on gray
Democratic presidential candidate Sen. Elizabeth, D-Mass., speaks at a town hall campaign event, Monday, Feb. 10, 2020, in Portsmouth, N.H. (AP Photo/Robert F. Bukaty)
Moderator Gloria Pilotte wears a "Vote" pin during the New Hampshire Primary at Bishop O'Neill Youth Center, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
An election worker holds up an "I Voted" sticker during the New Hampshire primary at Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Residents arrive to vote in the New Hampshire primary at Bishop O'Neill Youth Center, Tuesday, Feb. 11, 2020, in Manchester, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., arrives at a campaign stop at Rochester Opera House, Monday, Feb. 10, 2020, in Rochester, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate former Vice President Joe Biden flexes his arm along with Jaime Karnilaw of Concord, N.H., as they pose for a photograph at a campaign stop at Cilford Community Curch, Monday, Feb. 10, 2020, in Gilford, N.H. (AP Photo/Andrew Harnik)
Pat Provencher wears a jacket in the colors of the American Flag covered in buttons in support of Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg, at a campaign event for Buttigieg, Monday, Feb. 10, 2020, in Plymouth, N.H. (AP Photo/Matt Rourke)
Kevin Costner arrives for a Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg campaign event, Monday, Feb. 10, 2020, in Milford, N.H. (AP Photo/Matt Rourke)
A sign is posted in the snow ahead of a Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg campaign event, Monday, Feb. 10, 2020, in Milford, N.H. (AP Photo/Matt Rourke)
Democratic presidential candidate former Vice President Joe Biden pauses while speaking to supporters at St. George Greek Orthodox Cathedral, Monday, Feb. 10, 2020 during a campaign event in Manchester, N.H. (AP Photo/Pablo Martinez Monsivais)
Democratic presidential candidate former Vice President Joe Biden and his wife Jill Biden greet supporters during a campaign event at St. George Greek Orthodox Cathedral, Monday, Feb. 10, 2020, in Manchester, N.H. (AP Photo/Pablo Martinez Monsivais)
Democratic presidential candidate former Vice President Joe Biden speaking to supporters at St. George Greek Orthodox Cathedral, Monday, Feb. 10, 2020, during a campaign event in Manchester, N.H. (AP Photo/Pablo Martinez Monsivais)
A man holds a flag that reads "Veterans for Bernie 2020" outside a rally for Democratic presidential candidate Sen. Bernie Sanders, I-Vt., at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., speaks during a campaign event at Exeter Town Hall, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., speaks at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., laughs as she speaks at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., speaks to members of the media on a media bus outside at a campaign stop at Rochester Opera House, Monday, Feb. 10, 2020, in Rochester, N.H. (AP Photo/Andrew Harnik)
Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., speaks to members of the media on a media bus outside at a campaign stop at Rochester Opera House, Monday, Feb. 10, 2020, in Rochester, N.H. (AP Photo/Andrew Harnik)
People wait for Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., to speak at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., speaks at a campaign event, Monday, Feb. 10, 2020, in Exeter, N.H. (AP Photo/Elise Amendola)
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