It is true that Capitol police ushered in some of the crowd. My understanding is that was a tactical decision because the cops were greatly outnumbered. And, some of those protesters just went in, walked around then left. Big deal, who cares.
However, it is undeniable that some of that crowd was violent. They broke windows trying to get in, trampled and attacked cops, attempted to break into secure areas where lawmakers were, looted some offices, etc. Some of those protesters were out of control.