Your whole premise on this being a "bad neighborhood" that the Asian man should've known to avoid, was because it was filled with black people. There is no reason why the Asian man should've known it was a bad neighborhood, prior to being robbed. So why should he have known, smart guy? What's THE reason he should've known? Go on, just fuckin' say it.
Canadian, when you live in a city you learn about that city. If you're going to venture off into that city, you should know about the neighborhoods and which you should avoid.