A Good Setting for a Fable about Racism. (This should get your attention).

This is going to sound weird, but I need help on finding a good setting for making a fable about racism. I'm doing it for school (it's a replacment for the usual semester exam) so I need it to be spot on. I have already chosen my animal characters but I just need a good place for it to go down. I have an idea of it being at like a grocery store or a diner or something like that. But it just feels pretty basic. Any helpful ideas? :)