This all seems obvious. Especially given what's happened when building are taken over. They are basically saying form a march, and use it to take over a building. Then some obvious shit about getting through some doors and how to barricade them once it. We've seen this on the news many times over the years.
All of this is defeatable/defendable. You can break through a door that has a tied down before it or simple use the building floorplans to find a way around. There is nothing in there about what happens when there are armed people in the building. My point is that the world doesn't have to put up with this. Sure, there is a bit of a first amendment argument, but they are committing a crime doing this. They're breaking and entering, damaging property, disrupting peoples' lives, etc. Those are calls to action which means you can't find behind the Bill of Rights. You're just a criminal.