My perception is that this is because white people actually have achieved many superior things to be proud of, and the other listed groups have little. You could think you are superior even if you are not, but to others, it would look like a joke and not even worth to bother. But if you are proud of yourself and you are actually superior, this is a threat to the people who know they are inferior. White people pay lip service to "black/gay pride", but they don't actually think black/gay people have much to be proud of, so it is like a teacher's saying "oh, you're so great" to a special child who solved "1+2 = ".
My perception is that this is because white people actually have achieved many superior things to be proud of, and the other listed groups have little. You could think you are superior even if you are not, but to others, it would look like a joke and not even worth to bother. But if you are proud of yourself and you are actually superior, this is a threat to the people who know they are inferior. White people pay lip service to "black/gay pride", but they don't actually think black/gay people have much to be proud of, so it is like a teacher's saying "oh, you're so great" to a special child who solved "1+2 = ".
No, I am not white.