I fully support the expulsion of the ringleaders of Sigma Alpha Epsilon "bus of bigotry" at Oklahoma University. I do not agree with those who say that this is too harsh a punishment.
However, some commenters have made valid points about how difficult it is to raise anti-racist children in a racist society and on not blaming the parents for everything, etc. I well remember how I felt when the Right Wing noise machine blamed "liberal parenting" during the Bush years when some middle-class white young adults joined al-Qaeda or the Taliban, etc. (And we see the same thing now with ISIS recruiting here and in the UK, etc.) Children are never wholly the products of their parents or environment--but parenting and environment are important.