Prejudices

Why would I think the bike was stolen?
Because he was riding another bike, holding the second one by the handle, awkwardly?
Because it was not the correct size bike for him? Because it had no seat and looked brand new?
Because I was driving in a not so good neighborhood?
Because he was black?
I tried to imagine the same scene in the more expensive neighborhood uptown. A white guy riding a dirty bike, handling a brand new one with no seat. Would have I had the same thought?
"Stolen. Definitely stolen".