I don't think the average Anon member has the balls to goto a protest full of violent Muslims. Scientologists are a lot safer to pick on.
Hrm... More like "less street mobs, more lawyers".
I'd take my chances with a crowd of violent Muslims with knives, molotovs and whatnot than Scientology. You can run from the mobs, or return fire. With Scientology, they just keep sending attack lawyer after attack lawyer. It'd be like trying to win a fist fight against a pillow, only a lot less productive and hideously expensive.