Because they are American usually.
a wink is as good as a nod to a blind man
Because they are ambitious with their arguing yet too damned lazy to look it up in a dictionary..
They usually don't care what it means, they just think it's a Bad Thing and thus they can use it as an insult to shut you up.
Some of them at least vaguely understand enough to apply "fascist" to right wingers and "communist" to lefties.
like racist?... i hate that....
People who throw insults are not looking for accuracy. Any kind of splatter will do.
idiot... (and I know what this word means)