I totally disagree with that. The majority of insults that I see are from (presumably) straight white men against other straight white men. Just look at any console / fanboy thread.
I've been harassed by groups of blacks and latinos over PSN because I'm white and speak limited Spanish.
"On my business card I am a corporate president. In my mind I am a game developer. But in my heart I am a gamer." - Satoru Iwata