It's better than Sunnydale, which doesn't seem to have any non-whites except when the vamps bus some in, but Angel's big demonstration of LA's human [1] diversity was what, the gang of Blackula killers in the first and second seasons? And their leader Gunn has to choose between being cannon-fodder for Angel or having contact with his buds?

1: Mind you, this could be another example of White People are Oblivious to Supernatural Threats. Maybe most of the blacks and hispanics who would have lived in LA took a look at the local demon population and decided that pretty much any town that didn't have an indigenous population of things that would eat them would be a better place to live.