It's a fairly common trope for heroes to beat up bad guys - that's essentially what most comic books boil down to, as well as a good percentage of Hollywood action films. BUT... the heroes in those stories typically follow some kind of honor code that sets them apart from the villains. If you write about a bunch of people raping rapists, then just be aware that your audience may simply view both parties as morally reprehensible villains.
Having said that, the stories one finds on this forum are written for a very specific reason which has nothing to do with literature. So if that's your kink, then you do you... It's not my cup of tea, but who am I to judge?