Imagine for a moment you and a group of people tried to force your way into the capitol building on a normal day with a group of people. Do you think you could do it without all of you getting totally massacred?

Here are the protestors getting through the barricades. The barricades are pulled open for them and the police officers casually turn their backs to them and walk with the protestors towards the capitol building:

https://www.youtube.com/watch?v=2Hpj-CAJB6Y&feature=emb_title

Second Source: https://twitter.com/PollEveryday2/status/1346969946992029696

And here are the protestors gaining entrance into the building interior. This vigilant policeman is unarmed, waves a little stick, and just runs away from them, leading them into the building:

https://www.youtube.com/watch?v=vsPIZk6MRyE

Second source: https://twitter.com/IndigoLeo10/status/1346941327720796166