I don't stop with authoritarianism as the only measure of people being oppressed. There are a ton of ways USA citizens are being oppressed. We just vote for who our oppressors are.
"Dictatorships are inherently unstable: you can slaughter, imprison, and brainwash entire generations and their children will invent the struggle for freedom anew. But promise every man a chance to impose the will of the majority upon his fellows, and you can get them all together behind a system that pits them against each other." Source
Everyone sort of enforces the rules as they see fit now. The difference is there is an expectation to not resist when someone is abusing their power because they are an authority figure. Under anarchism, it is your peers holding each other accountable, and your right to question actions against you is accepted.