"I realise there is a portion of the gaming fraternity for whom getting online and talking racist, sexist, homophobic smack talk is part of the fun, but they are not my community and I’m not interested in any websites which actively engage with them. I’m also not interested in playing any games with them. LTM (learn to moderate)."
That in a nutshell will do for me, as well. Well said, succinctly put, madam Spinks.