Where else could Khmer Rouge-esque regimes arise?

I have recently been reading about the Khmer Rouge and the atrocities they commited, and I've been wondering where a similar regime could arise. A regime similar in that it executes intellectuals, evacuates the cities and makes people work as peasants on farms, commits acts of genocide against ethnic minorities and where an extremely high amount of the population die due to the regime. Where else could this arise? Africa? Other parts of Asia? Maybe even Latin America?
A Japan with a certain sect gaining power ?
 
I was thinking a rump DPRK if the leadership was even more bugfuck crazy. That or a rump Empire of Japan post-WWII that preaches a return to isolation a la the Tokugawa era - the parts are there but I don’t know what spark would bring it about (perhaps a Downfall scenario with a shit-ton of firebombing and the US occupying Tokyo and everything south while the Soviets take Hokkaido. The rump Empire would be the northern third or so of Honshu, the DPRJ (or whatever Soviet Japan calls itself) would be Hokkaido, and the Republic or Japan would be Kyushu, Shikoku, and the southern two-thirds of Honshu including Tokyo.
 
Wasn't Uganda under Amin starting to turn into a true dystopia with the mass killings, bodies plugging up the dam, and predilection for cannibalism?
 
Top