Most of the kids I have ever seen roaming the halls of high schools when they are supposed to be in class are blacks. And the first kids to act out and disrupt the class are blacks 99% of the time. And all of the parents I have ever had to ask to leave a parent teacher conference for getting mouthy, disrespectful and thoroughly out of line have been blacks, even when you show them written documentation that their kid has not been doing their work and/or has been disruptive in class. This is not bigotry on my part, it's what I've seen with my own eyes. They want their kid to get a passing grade without having done the work.
Just another version of TINSTAAFL.
People are blind or refuse to recognize/acknowledge that there are differences for/by various cultural societies and in some cases the differences are related to physical differences. The idea that all humans can be assimilated into one all the same society like the Tower of Babel is a Lyndon Johnson feely-goody aberration. Of course it is to the advantage of some cultures to make others pay for their shortcomings.