It’s pretty obvious to me from the limited video I’ve seen that this was a “staged insurrection”, egged on by radical leftists in conjunction with Federal agents who coordinated the mayhem, furthering the takeover of a Free America by the “Deep State”. The term deep state is used because not only is the Executive Branch against America, but the Judicial Branch AND the Legislative Branch have thrown the Constitution into the dirt.
I think it was a combination of pissed off ordinary folks and FBI instigators that used that energy to make it ugly.