Mental illness is no joke, I agree. But at the same time why did you choose to bring racism into play?  Musician humor and black humor are two totally different entities.  Like I said you need to lighten up.  The kids I deal with do better with humor than with trying to make them focus on what their minds have no concept of.  I deal with kids and have autistic kids in my family, and humor gets through to them a lot better than trying to explain what isn't important to them.  Being safe and secure is how  I choose to focus, not chastising.