Jesus was not kind to the Priests and Pharisees.  Are we supposed to label sin or to look the other way?

John 8:44 (Jesus talking to the Pharisees)  "You belong to your father, the devil, and you want to carry out your father's desires.  He was a murderer from the beginning, not holding to the truth, for there is no truth in him.  When he lies, he speaks his native language, for he is a liar and the father of lies."