That's cluturalist at best and mild racism at best.
I was raised in the upper class for the first 14 or so years of my life until my family's situation changed. Since then I've been middle to low middle, and during my high school and college years I was somewhat racist, but prided myself on the fact tha I wasn't.
In 1995, my brother and my best friend (same guy) went into rehab for a bad heroine and cocaine addiction. It was the day after my 20th birthday, and he relapsed many times. He now has 11 years and has since opened up a couple of sober living houses.
In these houses, there is a real clear reality as to who is who and what is what. At the baseline to people, there are cultural differences to blacks, hispanics, whites, asians, all of these guys. But the likeness outweighs the differences so far beyond any skin color, ethnicity, religion or heritage.
When you take all these people from every corner of society, when these guys work from the bottom up, and try to improve their own lives, they're good people. It doesn't really matter that one was a gang banger, and that another was a burglar, and that another was this or that.
When people start to realize that we're all in this together, and a lot of times it takes a terrible reality to define that, once they realize that, they become people, and good people... the differences become futile, immatterial and non-existant.