If you had just made that one comment stating you "hate rape victims", a warning of sorts would most definately be in place.
If you did more than that, actually having a negative disposition against such victims then nothing less than a lifelong ban is enough, in my opinion.
What you talk about is hair, hair is superficial, hair can be replaced by a wig, hidden by a hat.
Rape is something which changes a person for life, they will be haunted by nightmares, their way of interacting with everyone around them will drastically change, it's something which doesn't happen one day and is then finished, it lasts a lifetime.
The fact you consider that to be less bad is downright insulting to such people, and until you have the experience to know what it's like to compare the two, I suggest you don't.