This is insane. Are they really going to suspend a student over a T-Shirt about rednecks?
They already did.
Seems to me there was a precedent, back in the 1960's during the beginnings of the "antiwar" movement. A few Des Moines, Iowa students wore black armbands to school. I guess the message is, kids can wear whatever they want, as long as the message is "politically correct" i.e. leftist in nature.