Point 2! : Whenever a person is seeing doing wrong from your point of view - investigate first before you jump to your conclusion. Once confirmed, you might want to correct him @ her in private & not openly...because like you, he/ she has not reached the level of Umar al Khattab who could be criticized openly. That...if you want to be GENTLE.! Otherwise, one could go on being impolite, rough & rude.