"I believe these muggers are black so this information should be published so the rest of you hitch hikers can avoid being dropped in black areas"
Dude, judging an entire group by the actions of a few is called stereotyping. Judging an entire race by an isolated incident is called racism (or just plain stupid). As far as "learning my lesson", I've been mugged and ****ed with plenty, and naturally it made me mad at the time. But if you spend anytime travelling, you know people are people, bound to do you good when you least expect it. So I'd say you're the one lacking in experience- of the positive kind.