To the police or the town for doing something illegal. Selling drugs, making moonshine, growing marijuana, illegally zoned business. Or does it take something worse, abuse of animals, children and spouses. Are you lenient towards a good neighbor that might be breaking the law by growing marijuana. No disturbances or loud music or taking up extra parking spaces. Or do you let them do what they want as long as it doesn't affect you or bother you. Would you tell on your neighbor to their spouse if you knew they were cheating on them? And remember have respect for those whose opinions differ, they may be raised differently then you.