So, can I dance on your personal property?
If you damage it, then you can be charged. I can also charge you with trespassing because my private property is not a public forum. Not the same thing, at all.
You're right, being a stupid forget and dancing BADLY on sacred ground then getting into an argument and fight with a cop seeks worse.
They were exercising Civil Disobedience, but I don't expect you to understand what that is with your 3rd grade level of education.