in the one video to me there is a suggestion that may have been tactical--I actually think it is at the beginning of the long one that you posted--before the beating one came out I was already pondering that possibility. Especially since I kept seeing more and more apparent conflicting behavior in the videos. The scene: is a line of Cap cops just standing in a row, almost at like attention, inside a corridor. And protesters are filing past them, these ones noisily but relatively peacefully. And the cops don't move against them physically at all. But they just keep repeating "you are not allowed" several times, like robots. Too strange, I first thought.!

Then I thought about other Cap cops pretty violently physically struggling with protesters to set up barricades at roughly the same time, at side doors. And others waving in lines of people at one central door. 

Then I read the best "what happened" stories, like WaPo's. And they tell of a sweep of the building to get all congresspersons and their staff in the secure space before inciting more violence. And then after that, an effort all at once to get everyone in the main hall back out. 

With a ovefrwhelmed too small force, waiting for reinforcements, doesn't that sound like a plan? Doesn't it also sound like the the technique of kettling used on street protesters. And trying to calm down the ones inside to keep them from really getting wild? The are not encouraging but trying to keep further chaos to ensue.

Perhaps overdoing the 9/11 comparisons, but this almost reminded me of the Flight 93 passengers plotting to takeover the cockpit. It's like, most of them teamed up in the midst of chaos and made a plan the do the best they could. Here, inflaming things further would really make things worse, especially after tear gas failed to deter many.