It's OK to criticize, but don't be/get 'self-righteous' about it.
a 'self-righteous' person/tone
(..) Grail quests require sacrifice. You are a murderer. No. No. Robert, tell her. When history is written, murderers are heroes. You self-righteous bastard! We need to just walk away. -No, don't. Don't. -Walk away. I'll do what I have to now. Anything. (..)2006 The Da Vinci Code