There is nothing more dangerous than ego for it creates entitlement, and whoever feels entitled like hitler or islamic terrorists who are noble – trying to rid the world of evil… And as we all innately contain ego ( the proof that we can get angry) the only solution (to be good and not descend into savagery) is as the Alter Rebbe teaches, hate yourself (your evil – and if you dont think you have it please begin at the top) and love your Divine part