I don't live in a black majority neighborhood right now, but I did live in Harlem when I was in college and a few years afterwards. I'm not claiming there weren't any rude people there. Yes, it was definitely rowdier than the UES, but I loved my old neighborhood. There were some trashy people there, but there were some great people there, too. I can honestly and 100% truthfully say I don't recall having one argument with someone I interacted with in passing during the 4 and a half years I lived in Harlem.
What's your ethnic background? Your experiences could be directly related to your own background. Meaning attitude and acceptence of certain kinds of behavior.
I hate anyone who gives me an excuse to do so, including my own people. I was not always this way, but I've found that being tolerant all the time leads you down the gutter. Thank heavens this was in my youth. Now I am an adult and my opinions are pretty much solid and wont budge unless I realize some great fault of my own.
You live in the City. Now, comparing Harlem to lets say Bed Sty or Jamaica, is like comparing apples to oranges. Harlem is different. Get yourself a place in a rowdy place somewhere in Queens or Brooklyn and then compare and contrast your experience with Harlem, and the places I've just told you about.
Not to generalize, but you live in the UES. Millionaires row, yuppie heaven, close acess to a great park. The whole package. If we were taking social caste, you'd be miles ahead of me. What my point is that you obviously are very well off financially, as opposed to a middle class, under 21, college kid like myself. You can shake off rudeness, unofficial crimes, I can't. Why? Well, for one I don't live in a yuppie place where there's no adversity. A yuppie place that's full of people who's very nature is tolerance to the extreme, which is not a good thing always.
Have a nice day.