That sounds like a Casey Stengel quote.
I think you mean Yogi Berra.
The violence I was referring to would have been an armed attempt to actually seize the capital, not just trespass and make a nuisance out of themselves. People who want to overthrow the government don't invade wearing bison horns.
Now if they did have arms stashed away, and had actually implemented a real plan, they are in big trouble. Since they didn't actually implement the plan as far as we now know, I don't see how they could be charged with the worst act. But they certainly would deserve to be charged with conspiracy by planning it if that happened and should go to jail for that.