And the manner in which they've been doing this is by threatening violence if they don't get what they want. Every time they threatened violence the rest of us would cower in fear, and run away, and be non-confrontational. But my argument is that they're going to engage in violence no matter what we do or don't do. Don't give them what they want and they riot! Give them what they want and they'll be violent to the people they hate because cruelty is the point.
I had the hardest time trying to get my friends to understand that some people only understand they need to leave people alone only after getting their ass kicked (which is why I support punching Nazis). Sometimes you will have to fight no matter how much you hate confrontation. I loathe confrontation but even I have had to beat an ass on occasion when I was kid. I didn't like it, but I did it anyway because some people are going to be violent no matter what, so we may as well make them work for it. My mother had a strict motto when it came to bullies (because she used to be one herself as a child): You got to bring some ass to get some ass!
In other words, she never picked a fight with someone she knew would fight back hard, and make her work for it. These guys are the same way.