Radical Mutant Power Beeyatch!
It's not really shocking that most of the "bad" mutants in X-Men III are young, angry people of color, with piercings and tattoos. I don't want to get into the race, class and gender analysis of the film/storyline; nor do I want to talk about discriminatory stereotypes of youth. It's so damn obvious and I'm sure someone out there in cyberspace has already done it.
The point I would like to make is that the radical mutants are by far much hotter than the liberal ones (i.e. the X-Men). Their radical politics aside, they are just too damn sexy with their tattoos, dyed hair, black leather gear, piercings, and badass attitudes...
Just look at the photo above. Need I say more?