My dad being a (now retired) cop and growing up with black friends who were nothing more than backstabbers, I am somewhat biased to just not liking black people. I honestly judge them based on their cover, more deeply based on my past experiences. But then, after working in the mall for 3 years, you start to see that most stereotypes are true. Rich white people are bitchy, Indians are cheap and stink, Mexicans steal (but they don't say anything when they do), Blacks steal (but they usually like to strike up conversation and act like they're your buddy to try and distract you), Asians always want a discount.
My point? I judge people based on MY experiences. My philosophy in life, while very negative and pessimistic, is very realistic. If the saying "one bad apple can spoil the bunch" is true, then what that says to me is "one good apple can't save the spoiled bunch".
Just because there is an affluent, upper-class "black neighborhood" doesn't mean diddly squat. The fact that you all have to make a POINT that it is an upper-class BLACK neighborhood and not just an upper-class neighborhood, right there proves that you still buy in to America's continued racism.
I have learned to let the past go and try to not pre-judge people, but the more people I meet (of all different races and backgrounds), more often than not, I am right about them. This world is just full of selfish people and I don't think it's going to get better any time soon.
PS, just so you know I'm white/hispanic; have dated Filipino, white, Mexican and Asian girls and my "best friend" for 10 years was black. Until he decided to date my ex, right after we had broken up. Thanks man! My next 3 black friends were just as shady. I have a pretty wide range of direct experiences with many different kinds of people.
My conclusion? In general, this world is just equally fucked up everywhere, and the majority of the US population are just shady bastards!