Self-righteous

Self-righteousness (also called sententiousness, holier-than-thou) is a feeling of (usually) smug moral superiority derived from a sense that one's beliefs, actions, affiliations are of greater virtue than those of the average person.

Does this sound like anybody you know? It is essentially very easy: somewhere along the line someone started to believe that 'wrongs' were not wrong if they were done by "nice" people like ourselves. Wrongs were right and 2+2=5, even war was peace. Funny what you can do with language to convince people without independent thought, how they should live their lives.