Donald Trump has been suspended from Twitter and Facebook after tweeting to supporters who attacked the US Capitol.
In a social media message to protesters he said "I love you" before telling them to go home. He also repeated false claims about election fraud.
Twitter had to remove three of his tweets for "severe violations" of the Civic Integrity policy of the company. It also threatened to permanently suspend Trump from the platform if he violated its rules again: "Future violations of the Twitter Rules... will result in permanent suspension of the @realDonaldTrump account".
Meanwhile, Facebook banned Trump for 24 hours. YouTube also removed the video. Facebook said: "We removed it because on balance we believe it contributes to rather than diminishes the risk of ongoing violence."
His supporters stormed the seat of US government and clashed with police, leading to the death of one woman. The violence brought to a halt congressional debate over Democrat Joe Biden's election win.
Before the violence, President Trump had told supporters on the National Mall in Washington that the election had been stolen. Hours later, as the violence mounted inside and outside the US Capitol, he appeared on video and repeated the false claim. He told protesters "I love you" and described the people who stormed the Capitol complex as "patriots".
YouTube said it removed the video because it "violated policies on spreading election fraud".
Later on, Twitter also removed the video message from the President to his supporters, as the platform said carried a “risk of violence.”
Instagram, which is owned by Facebook, blocked Trump from posting for 24 hours as well.
Social media companies have long been under pressure to prevent Trump from posting false and misleading posts on his accounts.
Trump has more than 88 million followers on Twitter and 33 million on Facebook.