system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where the heck did North Korea go wrong?

I mean, where they always as controversial and bad as they are? Or did something happen to make them like this?
gpt
Well. . . it's not really their fault. Japan annexed Korea in 1910, and the country was essentially under foreign rule from then until the partition after WWII. The half above the 38th parallel went to the USSR, which immediately set up a Soviet Civil Authority under the direction of Kim Il-sung. 

It was kind of all downhill from there.

If the question is "Why has North Korea gone so completely batshit crazy compared to other communist countries," the answer is "It hasn't." Other dictatorships have gotten pretty damn weird, only they don't occupy a place of strategic importance to at least four different countries with regional if not global influence. Other tinpot dictators tend to get deposed, internally or externally, before they go full-on Pyongyang. But North Korea has the support of China, which has enabled the same bog-standard communist nutjobbery to continue unabated.

Again, it's not really their fault.