Wahabbism treats those who oppose it as enemies of god. Right wing demagogs replace god with the nation state and deem those in opposition to them as 'enemies of the state', or 'un-*insert national adjective*'. Two sides of the same coin.
You stopped short, you forgot that left wing authoritarians do the same thing only declare enemies of the people or the revolution. It is a common tactic among all authoritarians, delegitimize your enemies, whether it be by declaring them mentally unsound or just hateful bigots who opinions can be ignored or censored. That sounds familiar.