Have you ever tried to change someone’s mind by mandate? If you’re an out and out racist being forced to go on a course you definitely don’t agree with, then I’m not convinced you’re going to have a damastine revelation about your own bias as a result. You’re suffer through it, undermine it, or (worst case scenario) buddy up with other racists and exchange numbers. If people are out and out racist, then the best thing to do would be to acknowledge that fact, remind them that acting on their racism will get them on the wrong side of the law - and then just wait for them to die. To make a better world, you gotta work on the kids :o)