[rhizome]

Homosexuals are not an ethnic group.

[randyrand]

> An ethnic group or ethnicity is a category of people who identify with each other based on common language, ancestral, social, cultural, or national experiences.

Seems to fit to me.

[possibility]

I think "people from place" constitutes an ethnicity, but I'll concede that this isn't a common mindset.

[spacehome]

I'm pretty sure "people from Castro" does not constitute an ethnicity.

[rhizome]

You're talking about a population.