Were Antifa and BLM part of the Capitol riot?

"It was us!" an alledged Antifa member claimed, referring to the US Capitol breach on Jan. 6.

A Trump supporter was also seen stopping a man from breaking the Capitol window.

View the Timeline of Events in DC on Jan. 6 here:
https://www.theepochtimes.com/what-happened-in-dc-on-jan-6-2_3648252.html