Ok, we all know about Kung Fu and peaceful temple Monks, but what about the other side of the coin? Say Kung Fu taught by the Tongs, or the Italian Mafia?
How prevelent is that, and what would you do if you ever discovered one of your former teachers is a family member in some sort of major underworld criminal enterprize?
What if you knew it while you were a student?
What if you knew it before you were a student? Would you learn from him because he has real world experiance?