Protesters have stormed the US Capitol during the official Electoral College vote:

https://twitter.com/disclosetv/status/1346901941054533632
https://www.youtube.com/watch?v=f5e3yfpMJoY
https://www.youtube.com/watch?v=ENPkiDl6Wdg

Protestors entered the building after Vice President Mike Pence released a statement saying that he doesn’t have the authority to reject fraudulent electors:

There are some reports that Antifa and Black Bloc agitators were mixing with the Trump supporters to cause trouble: