WASHINGTON (AP) -- The Black Lives Matter movement is creating an environment that can put police officers at risk, Republican presidential candidate Chris Christie said Sunday, accusing President Barack Obama of supporting the movement, encouraging "lawlessness" and not backing up law enforcement.
"I don't believe that movement should be justified when they are calling for the murder of police officers."
Chris Christie on "Face The Nation"
Told that some individual members have been recorded calling for the deaths of officers, Christie replied that the environment is "what the movement is creating."
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Chris Christie on the campaign trail
Christie: Black Lives Matter 'create' call to kill officers
Republican presidential candidate, New Jersey Gov. Chris Christie talks as he meets with a supporter before a news conference Monday, Jan. 25, 2016, in Concord, N.H. (AP Photo/Matt Rourke)
Republican presidential candidate, New Jersey Gov. Chris Christie greets Fidelity Investments employees, Monday, Jan. 25, 2016, at their facility in Merrimack, N.H. (AP Photo/Matt Rourke)
New Jersey Gov. Chris Christie listens to a briefing on a snowstorm during a visit to the New Jersey Department of Transportation Traffic Management and Technology Center, Saturday, Jan. 23, 2016, in Woodbridge, N.J. Towns across the state are hunkering down during a major snowstorm that hit overnight. (AP Photo/Julio Cortez)
Republican Presidential hopeful Governor Chris Christie of New Jersey speaks during the 2016 Republican Jewish Coalition Presidential Candidates Forum in Washington, DC, December 3, 2015. (Photo credit should read SAUL LOEB/AFP/Getty Images)
Republican presidential candidate New Jersey Gov. Chris Christie speaks during the Republican Presidential Debate, hosted by CNN, at The Venetian Las Vegas on December 15, 2015 in Las Vegas, Nevada. AFP PHOTO/ ROBYN BECK / AFP / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
Republican presidential candidate New Jersey Gov. Chris Christie steps off the bus with his wife Mary Pat during a campaign stop at the launch of his four day bus tour, Saturday, Dec. 19, 2015, in Exeter, N.H. (AP Photo/Mary Schwalm)
Republican presidential candidate, New Jersey Gov. Chris Christie, speaks during a meet and greet with local residents, Wednesday, Nov. 11, 2015, in Bettendorf, Iowa. (AP Photo/Charlie Neibergall)
Republican presidential candidate, New Jersey Gov. Chris Christie speaks during the APPS National Security Forum, Friday, Dec. 4, 2015, in Fort Dodge, Iowa. (AP Photo/Charlie Neibergall)
Republican presidential candidate New Jersey Gov. Chris Christie speaks during a campaign event at the Glory Days Sports Bar and Grill in Council Bluffs, Iowa, Friday, Oct. 30, 2015. (AP Photo/Nati Harnik)
Republican presidential candidate, New Jersey Gov. Chris Christie speaks at a No Labels Problem Solver convention, Monday, Oct. 12, 2015, in Manchester, N.H. (AP Photo/Jim Cole)
Republican presidential candidate New Jersey Gov. Chris Christie talks with employees during a campaign stop at East Coast Lumber Wednesday, Oct. 7, 2015, in East Hampstead, N.H. (AP Photo/Jim Cole)
THIS WEEK - 10/4/15 - Presidential candidate and New Jersey Governor Chris Christie appears on THIS WEEK WITH GEORGE STEPHANOPOULOS, airing on the ABC Television Network. (Photo by Ida Mae Astute/ABC via Getty Images)
Chris Christie, governor of New Jersey, waves while waiting for Pope Francis, not pictured, to arrive for a joint meeting of Congress in the House Chamber at the U.S. Capitol in Washington, D.C., U.S., on Thursday, Sept. 24, 2015. Pope Francis, the first pontiff to address U.S. Congress, is preaching to a less-than-harmonious congregation as he faces a Congress riven by disputes over issues closest to his heart: income inequality, immigration and climate change. Photographer: Pete Marovich/Bloomberg via Getty Images
MEET THE PRESS -- Pictured: (l-r) New Jersey Gov. Chris Christie appears on 'Meet the Press' in Washington, D.C., Sunday, Sept. 13, 2015. (Photo by: William B. Plowman/NBC/NBC NewsWire via Getty Images)
New Jersey Gov. Chris Christie speaks to supporters during an event announcing he will seek the Republican nomination for president, Tuesday, June 30, 2015, at Livingston High School in Livingston, N.J. (AP Photo/Julio Cortez)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0319 -- Pictured: (l-r) Governor Chris Christie during an interview with host Jimmy Fallon on August 31, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
Republican presidential candidate, New Jersey Gov. Chris Christie talks with Joan Vlangas, left, during a campaign stop at a Greek festival in Manchester, N.H., Saturday, Aug. 29, 2015. (AP Photo/Michael Dwyer)
SQUAWK BOX -- Pictured: Governor Chris Christie in an interview on August 27, 2015 -- (Photo by: David Orrell/CNBC/NBCU Photo Bank via Getty Images)
New Jersey Gov. Chris Christie answers a question as he addresses a gathering at the Chabad House at Rutgers University Tuesday, Aug. 25, 2015, in New Brunswick, N.J. Christie urged Democratic Sen. Cory Booker and the state's congressional delegation to oppose the Iran deal, which is aimed at curbing Iran's nuclear weapons development.(AP Photo/Mel Evans)
NEW BRUNSWICK, NJ - AUGUST 25: New Jersey Governor and Republican presidential hopeful Chris Christie speaks at Chabad House at Rutgers University to express his opposition to President Obama's Iran deal on August 25, 2015 in New Brunswick, New Jersey. Christie also encouraged U.S. Senator Cory Booker (D-NJ) to oppose the deal. (Photo by Andrew Burton/Getty Images)
Republican presidential candidate, New Jersey Gov. Chris Christie, right, talks with Joe Hedrick at the Iowa State Fair Saturday, Aug. 22, 2015, in Des Moines, Iowa. (AP Photo/Paul Sancya)
DES MOINES, IA - AUGUST 22: Republican presidential candidate New Jersey Governor Chris Christie tosses a pork burger on the grill at the Iowa Pork Producers Tent at the Iowa State Fair on August 22, 2015 in Des Moines, Iowa. Presidential candidates have a long tradition of making campaign stops at the fair. (Photo by Scott Olson/Getty Images)
Moderator Campbell Brown listens as Republican presidential candidate, New Jersey Gov. Chris Christie speaks during an education summit, Wednesday, Aug. 19, 2015, in Londonderry, N.H. (AP Photo/Jim Cole)
New Jersey Gov. Chris Christie, left, congratulates Triple Crown winner American Pharoah's trainer Bob Baffert after American Pharoah won the Haskell Invitational horse race at Monmouth Park in Oceanport, N.J., Sunday, Aug. 2, 2015. Keen Ice was second. (AP Photo/Mel Evans)
Republican presidential candidate, New Jersey Gov. Chris Christie talks with drivers in the garage area before the NASCAR Xfinity Series auto race, Saturday, Aug. 1, 2015, at Iowa Speedway in Newton, Iowa. (AP Photo/Charlie Neibergall)
Republican presidential candidate New Jersey Gov. Chris Christie appears on "The Five" television program, on the Fox News Channel, in New York, Wednesday, July 22, 2015, with two of the show's co-hosts Dana Perino and Greg Gutfeld, right.(AP Photo/Richard Drew)
Republican presidential candidate New Jersey Gov. Chris Christie talks with supporters at a house party in Salem, N.H. Friday, July 17, 2015. (AP Photo/Winslow Townson)
New Jersey Gov. Gov. Chris Christie observes clients in the computer room at the hall during a tour of Volunteers of America Hope Hall as part of his focus on criminal justice reform, Thursday July 16, 2015 in Camden, N.J. Christie is calling for changes in the criminal justice system, seeking in part to give nonviolent drug offenders a better shot at rebuilding their lives and to improve frayed relations between communities and police. (Chris Pedota/Northjersey.com via AP, Pool)
Republican presidential candidate, New Jersey Gov. Chris Christie speaks to potential voters during a campaign town hall meeting, Thursday, July 2, 2015, in Rochester, N.H. (AP Photo/Elise Amendola)
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Black Lives Matter was established after the 2012 shooting of Trayvon Martin, an unarmed teen, by a neighborhood watch enthusiast, and has become an issue in the 2016 presidential campaign. The group said on its Facebook page in September that conservatives are trying to turn the movement into a danger to officers.
"We're targeting the brutal system of policing, not individual police," the movement said in its statement. "The Black Lives Matter Network seeks to end the system of policing that allows for unchecked violence against black people."
Police groups have bristled at that comment and pointed out people in marches drawing awareness to the issue have been recorded chanting for the deaths of police officers. During a protest outside Minnesota's state fair this summer, for example, some marchers were recorded chanting to fry police "like bacon." Earlier this month, the parents of slain black men and women were featured speakers at the "Justice or Else" march marking the 20-year anniversary of the Million Man March in Washington.
President Barack Obama last week defended the Black Lives Matter movement, noting protests are giving voice to a problem happening only in African-American communities.
"We, as a society, particularly given our history, have to take this seriously," Obama said.
The movement has become an issue in the presidential campaign. Some have taken its name as an implication that other people's lives don't matter, and respond by saying, "All lives matter."
Democratic presidential hopeful Martin O'Malley initially took that tack but apologized last summer. At the Democratic presidential debate earlier this month, he joined the party's other presidential hopefuls in giving a nod to the movement. African-Americans overwhelmingly vote for Democrats.
"Black lives matter, and we have a lot of work to do to reform our criminal justice system, and to address race relations in our country," O'Malley said.