Before I knew any better, I made up a name for those slightly offensive comments about people of color I used to hear at the very white college I attended. I called it mini-racism because it's not quite to the point everyone agrees is racist, but it still may be. Not quite in a KKK uniform, but definitely at a Halloween party in blackface.
Those comments are actually called microaggressions, and they happen a lot — but more often when you're the only like you around (at the office, or a mostly white college you attend ... maybe). Have you said anything like the examples below?