I work in a restaurant, as a server. When some people get sat a table of black people, they kind of groan and comment on how "they're not going to get a tip" or "look at that, another ghetto table.". . And the people saying this are black as well.. . Of course, there are white servers who make the same comments, but more often than not, it is the black ones. I do the same thing though, if an obviously white trash table comes through the door.. . How do i know they're white trash? Well, there are many ways to tell. If you see a woman wearing, let's say, a jacket. And this jacket has Winnie the Pooh (or any other Disney character on it). Or anything NASCAR, but that's a given. Mullets still give it away, and as scary as it sounds, i've seen a LOT of mullets lately (they're still not cool, people).. . But yeah, it happens. But mostly, from my observations, people of the same race are doing the profiling.