http://www.stirfryseminars.com/pages/color
offear.htm
Check this video out if you have the means to do so. It is very enlightening. I think there is still a subversive culture of racism in the US.
Take the Model Minority, or Token Minority Syndrome: This is the phenomena that occurs when university groups, large companies, etc want to form "focus groups" or study groups to determine the efficacy of this or to find a solution for X problem affecting employee productivity etc etc. They form the committee and then add their token minorities. They add one or two non white appearing professionals who look like, act like, and fit in the best with thir main stream white mentality in the group. These people are not going to be the ones celebrating Kwanzaa or chinese new year. They will have a nice house on a nice street with a christmas tree in the window an dan SUV in the garage. They tried their best to stay under the radar to hope that they would be accepted or if you like the word, assimilated into the main stream culture in order to avoid racist remarks, ridicule, etc etc.
Ever heard this one: "I don't really like black people, except Jim (the only black person the individual actually knows) he's alright"
Or this: "I work with this colored gal and she's really funny"
Or this "Oh, that's just jimmy. He can't really see because his eyes are to narrow! (makes an imitation of a chinese person)
All of these things were said by people I am related to-in the last couple of years. It is sad. These people would completely deny that they are racist, but their actions speak quite loudly.
Another really interesting experiment done in the 1960's was in an Iowa school a teacher told her students one day that the kids with blue eyes were better, smarter, nicer, better looking, etc etc than the kids with brown eyes and then they videotaped the way the kids interacted with each other for a day. It was astounding how terrible the kids with brown eyes were treated. The next day she changed the rules and the kids with brown eyes were superior. They were downright cruel to the oppressors of the previous day. You can watch it here
http://www.pbs.org/wgbh/pages/frontline/sh
ows/divided/etc/view.html
So in answer to your question, racism is alive and well in the US. It is built mostly I think on the fear of what we don't understand. It isn't hard to turn it into hatred, distrust, anger, and finally violence.