I don't like spending this much time arguing against campism but they just keep talking at me.
The rich aren't a minority group, and the action you're describing is literally the polar opposite of authoritarianism. If you have to redefine words to make an argument, you don't have an argument.
Minority group - any group holding less power than the group exercising the majority of it.
Authoritarian - concentration of power into one or just a few ELITE members.