Just to follow up, I picked white people because I'm confident they don't suffer discrimination in those areas. I'm white, so the only "someone" I feel comfortable speaking for is a white person.

I'm less certain that native americans, say, who have historically been treated poorly by just about everyone, wouldn't be watching for a different set of warning signs. I don't want to make assumptions about their experience in a given community.

I agree these discussions tend to boil down to man/woman and black/white but I think that's just what most of us in North America are most confident discussing. Anyway I'm glad it's been productive.