If you're going to categorize him, wouldn't he fall into the "People who've controlled countries and called themselves Communist, but who I don't think should represent Communists even though every person who's controlled a country and called themselves Communist was roughly like him?"

> Has there been a world war against the communists?

Yes. It ran for 70 years, with a truce during WWII. It was called the Cold War. It was fought in Korea, Vietnam, and many other countries.

> why you're this eager to minimise the crimes of Nazism.

I'm not eager to "minimise" anything. Nazis were horrible, but Communists killed more people, and that is just a fact. Why are you so eager to defend Communism?

> it's for you to show that Kim Jong-Un is a Communist

Umm... no, it isn't up to me to prove something that's been common knowledge since the 1950s, namely that North Korea is a Communist regime.

> no, it isn't up to me to prove something that's been common knowledge since the 1950s, namely that North Korea is a Communist regime.

The DPRK was notionally Communist in the Leninist mold originally, but it was progressively recast into what its own propaganda describes as an alternative Socialism/Communism, but which expressly rejects Marxist materialism and the central role of economic relations with a central role of the individual and the single great leader. In many ways, it's more Fascist than Communist in substance (the highly centralized ideology of Juche bearing an analogous relation to the heirarchical Fuhrerprinzip as absolute monarchy does to feudalism.)