Trump blocked on Twitter. Censorship or internal rules?

A brief background. It all started on January 6th. On this day, Congress was supposed to finally approve the results of the presidential election, won by the Democrat candidate Joe Biden. After the rally and Donald Trump's speech, his supporters, at his own call, went to "express disagreement" under the walls of the Capitol. The protest got out of control, protesters broke into the Congress building; during the storming, four Trump supporters and one policeman guarding the building were killed. A few hours later, the election results were still approved. Trump posted a video message via Twitter urging supporters to leave Congress, but once again named the election stolen. Because of this, the social network marked the post as containing false statements and banned it from reposting.

On January 7, the almost ex-president continued to publish posts about "theft of votes"; Trump's account was temporarily blocked after.

On January 8, new posts appeared: in one of them, Trump wrote that he wouldn't allow disrespect to millions of his voters, and in the other one, that he wouldn't go to Biden's inauguration.

Twitter employees believed that the statements could provoke new riots, such as those that took place on January 6 on Capitol Hill. For that reason, the account was finally blocked.

Facebook, Instagram, and YouTube have also blocked Trump's accounts, but temporarily.