Fr. Bryan Massingale gives us clear expanations of the racism problem.
I have been fortunate to hear Fr. Massingale in a number of religious education classes and keynote speeches. He quickly gets to a clear example of how we may well "miss the point" of how racism can slip into our way of thinking.
There is a great example of the lady asked to leash her dog early in this video. Try to watch it this far and you will see the issue clearly.