Don't waist time being angry - be glad that the idiots are self-identifying, so you know who to avoid.
Perhaps some clarification is in order? No one is upset with this looser because he likes girls, or because of his preference for them. Kara IS a girl, not a smelly hairy, nasty man. The looser in question has a stated preference for girls, Kara is a girl... The problem is that she is / was transexual and the looser can't handle the fact that she used to have a birth defect she has since had corrected. His little lizard brain can't handle it - and he is blaming her (and her "so-called condition") for it. It is BS - to be polite about it. It might be "the way it is" but that does not excuse it.
We DO find the way he has chosen to express himself to be pretty repugnant, - but even that is only because he is so bloody smug and condescending about it.