I thought that Trump supporters were the ones who stormed the Capitol

This video was recorded on her phone by someone who was at the Capitol last week. Why were the Capitol police actually letting people in? Who was breaking windows and doing other damage? It sure doesn't seem to have been Trump supporters. It's too bad there is no time stamp on this video, because I would be willing to bet it happened while Trump was still speaking. Additionally, the FBI warned about the possibility of an incident 24 hours ahead of time. So how on earth could Trump have incited anything, and what did he say that could in any way be construed as incitement to violence. The whole thing was a setup and a scam.