I'm just going to tell you up front: films about gang rape and vigilante justice aren't my thing. Sorry I don't live in a world where brutal sodomy and the gory repercussions that leave a woman avenged yet still forever shaken by the experience of being repeated violated then forced to become a murderer are desirable movie toppings.
But, in case that's something you list in your Facebook interests, here's a trailer for a movie about that. One final warning: it's a remake, so it also has that going against it. No one wins today.
Man, you KNOW this one's going to totally scale back the original's graphic depictions of sexual brutality! Fuckin' Hollywood, you know, man?