Superman was created in 1938, so it's not surprising that he'd end up fighting Nazis within a few issues

As I recall it, the original Superman concept was a kind of inversion of the Nazi Ubermensch ideal. Pretty sure that's where the name came from.

In 1938, when Hitler's (Nazi) racism was rising in Europe, two Jewish guys created Superman in response. His Krypton name is Hebrew.

https://leviathanjewishjournal.com/2016/12/05/kal-el-vessel-of-god-the-jewish-tradition-of-superman/

The word you are looking for is didactic. He was very didactic, indeed. But didn't kill or jail people or deny human rights bc of color or religion.