Hundreds of thousands gathered Saturday in Washington, DC and other parts of the country for the Women's March.
As People reports, "Pouring in by plane, train, bus and car...regular Americans joined celebrities to send a powerful message supporting women's rights, and to issue a stark warning to the newly sworn-in president."
Check out photos from the Women's March
Reacting to the protests, Donald Trump tweeted Sunday morning, "Watched protests yesterday but was under the impression that we just had an election! Why didn't these people vote? Celebs hurt cause badly."
Numerous reactions followed with one Twitter user saying, "FYI we did vote. You lost the popular vote. I'm surprised you don't remember that. It seems to keep you up at night."
Another said, "@realDonaldTrump they did. That's why you lost the popular vote. And indeed, you are a celeb that hurt their cause badly."
About two hours later, Trump posted another tweet on the topic with a much different tone, "Peaceful protests are a hallmark of our democracy. Even if I don't always agree, I recognize the rights of people to express their views."