What are some signs of abuse?

Rude/Disrespectful gestures
Constant complaining from the bench.
Questioning every decision.
Sarcastic remarks.
Personal attacks.—SEND THE COACH OFF IMMEDIATELY
Gyrating actions.
Kicking or throwing objects.—SEND THE COACH OFF IMMEDIATELY
Unpleasant comments by the spectators or parents.—NOTIFY THE COACH THIS WILL NOT BE TOLERATED
Personal attacks on any member of the officiating crew.—TERMINATE GAME IMMEDIATELY
If you are threatened in any way.—TERMINATE GAME IMMEDIATELY. STAY AS A TEAM AND CALL THE POLICE IF YOU STILL FEEL THREATENED.