Twitter and Facebook for the first time took the step of temporarily suspending Donald Trump from the platforms after the outgoing president spent the day tweeting and posting in support of a pro-Trump mob that stormed the U.S. Capitol building.

Twitter took action first by flagging most of Trump’s tweets from the day, a range of false claims about the election of incoming president Joe Biden and several that were widely seen as a calling for his supporters to act on such false claims as the election was somehow “stolen” or “rigged.”

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Then, in the evening, after Washington, D.C., was forced to go on lockdown and institute a 6 p.m. curfew due to the actions of Trump supporters, Twitter took the step to block from public view several tweets the President made during the day, saying they violated safety rules and citing the “ongoing violent situation in Washington D.C.” It clarified that Trump’s account will be “locked” for at least 12 hours, meaning he cannot use the platform and the public cannot see his flagged tweets.

“If the tweets are not removed, the account will remain locked,” the company said. This is the first time the platform has suspended Trump’s account, or that of any U.S. president.

The platform also removed a video Trump posted of him speaking to his supporters and telling them, in part, “I know your pain. I know your hurt. But you have to go home now. We love you. You’re very special.” However, the video had been viewed at least 10 million times before that action was taken.

Facebook also removed the video from its platform, but it had already been viewed at least 5 million times. Later in the evening, and after Twitter had done so, Facebook suspended Trump from using Facebook or Instagram for 24 hours. The company said it had “assessed two policy violations against President Trump’s page.”

But in a further and unprecedented step for Twitter, the company said that should Trump again violate its rules on “civic integrity” or “violent threats,” it “will result in permanent suspension” of his account. Facebook made no such statement regarding Trump’s future activity on its platform.

“We’ll continue to evaluate the situation in real time, including examining activity on the ground and statements made off Twitter,” that company added.

The threat of permanent suspension from Twitter, which has been Trump’s only consistent mode of communication with the public for years, came after a day of surreal scenes from D.C.