If you look like a thug, act like a thug, and talk like a thug when everybody is watching, how else do you feel people will perceive you?
No different if you look, act, talk like trailer trash.
If Sherman acts differently off the field when nobody is watching then all those people who weren't watching may not see it that way.:shrug:
As for everybody else, I don't know why it's racist to see that as thug behavior, especially since last I knew Crabtree isn't white and he was the one who was abused.
Either way the guy can sure as hell play and if I'm Pete Carroll I tell him not to change a thing, just expect people to see you for what you are.