Most racism isn’t represented by a redneck screaming racist slurs from his pickup truck. It’s the casual demeaning of the importance of “other people’s” problems (Heck, even using the word “other” in that context is a problem.) It’s about letting stereotypes dictate your response to a person, not even necessarily negatively.
You really have to watch this video of a rough experiment in human behavior: white kid trying to break a bike lock, passers-by assume he’s got a legitimate reason; black kid doing the same, shouting and cell phones and calls to the police.
It’s fascinating. Although I’ve got to say that one flaw in the experiment is the time it took the kid to fail to get the lock off…with the amazing array of tools he has in his bag, I would have been off with that bike in 10 seconds flat, so I was wondering why their experimental accomplice was so incompetent.