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Given the following post, respond as if you're commenting on Reddit:
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[Harry Potter] Was Grindewald Hitler/a Nazi?

I've had this argument with my friend for a long time, and figured you guys might be able to figure it out.

The timelines seem to match up, and he was part of a 'great (wizarding) war', and (I think) it was hinted that there was a disturbance with the muggles at the time as well.

so, the question remains.

Is he?

Could he be?
gpt
Hitler wishes Grindelwald was a Nazi. 

But no, he wasn't. While there's certainly a clear parallel between the two men, and they share a great deal of ideology, Grindelwald would never have worked with Hitler. He was a filthy Muggle. 

While some of Grindelwald's followers may have supported Hitler during World War 2 (which is why Grindelwald's defeat in 1945 is so closely tied to Hitler's downfall), Grindelwald himself never expressed any support for the Nazi regime or the machinations of the Third Reich.