Reagan got a lot of grief from the leftists too when he pointed out the obvious fact that the Soviet Union was an expansionist totalitarian rat heap. Why let a psycho tell us how it is?

North Korea is the poster boy for collectivism, a perfect controlled experiment in what happens when you take a particular culture, with the same people, the same history, the same backgrounds, split them down the middle, and make one live under a communist dictatorship while the other lives in a relatively free society*. I think to any observer the result is painfully obvious, unless maybe you're a college professor or something.

*the same experiment was successfully conducted in Germany.