haha - i like the saying "just because you are not paranoid, doesn't mean they aren't out to get you"
Occam's razor says the simplest explanation is the most likely. Concerning blacks traveling on buses I am fairly sure the simple explanation that that one girl Rosa Parks who defied authorities to sit on the bus that then sparked change was in fact correct.
But you know "verify, don't trust" - as i wasn't sitting in the bus it COULD be all a hoax? I'd guess not, however.