‘Where are the police?’ Lawmakers don gas masks, evacuate the US Capitol as Trump supporters storm the building

Washington D.C. was rocked by violence as members of the House and Senate gathered for a joint session of Congress to certify President-elect Joe Biden's Electoral College victory, and violent clashes were reporterd as pro-Trump demonstrators entered the Capitol Building:

Rep. Gerry Connolly tweeted:

Politico's Olivia Beavers reported:

Video was tweeted from inside the Senate chamber: