You should always back up your friends.
Tom's friend is Asian, and people in their class keep calling him the Kung Flu.
Tom has to decide whether to say something.
Tom tells his classmates to stop being racist, or he'll fight them.
Tom decides to stay out of the argument since he doesn't know what to say.
Tom's friend feels supported and thinks that he has a true friend.
Tom's friend continues to be harassed, and he feels greatly disrespected.