I found that there were a few racially slanted leads in this film,especially where the film was discussing gang violence and they showed not only a picture of black men carrying a coffin, they also showed what could have been labeled a gang "meet and greet". This showed that the film was made several years ago. I do not believe that this type of thing would escape the cutting room floor anymore. As for the idea that there is so much emphasis on environment...yes, I believe that environment is a large percentage. I also believe that we can counteract environmental factors. I did find the film to be very good though.
In my Theories of Counseling we watched a film that was an exercise about racism. www.pbs.org/wgbh/pages/frontline/ shows/divided/etc/crusade.html
This is very powerful and it speaks to racism directly, though the film was made in the 1950's I believe she is still giving incredible workshops today. Check it out if you get the chance.