Kinda funny, then, that bankrupt regimes with 1980s era electronics are orders of magnitude better at this "oppression" thing than our own high-tech governments.
The US government has it's citizens barely able to control their bowels due to unfounded fear of terrorism. Dissidents are corralled into "free speech zones" or simply ignored. Everyone is being watched - what they do online, where they go (phone tracking), who they communicate with. The government actively monitors and attempts to disrupt dissent online via operations against sites such as Slashdot. What little protection US citizens have in law is easily bypassed by having foreign partners such as GCHQ operate against them on the NSA's behalf. There are secret courts designed to prevent proper oversight and scrutiny.
There is little difference between the two main parties, and the people with the real power don't change even when they do. Americans have very little real democratic influence.
The US has outdone all those oppressive regimes and most of its citizens don't even realize what has happened. Rather than an unstable, overtly violent system of control the US has found a way to almost completely subdue the population without the risk of being overthrown.
Mod parent up please, this opinion deserves higher visibility.