I've been trying to search it and my fucking god all search engines are SHIT now. Searx (using google and bing) returns no results when I throw in a few quote marks as search operators to get exact text matches, and won't let me use yandex for some reason. Using Yandex directly is impossible because I'm not doing 5 ridiculous image captchas in a row to prove I'm not a bot and just conduct a single search. Brave keeps turning up wikipedia pages and Time articles but completely ignoring quote marks (I fucking hate how Brave just up and ignores important search operators without telling you, just to make it look like it's feeding you results, even though those results are ones you specifically asked for it NOT to return which is why the operators are there in the first place.

I finally started asking the Brave AI exactly where the text originated from and it says

The text likely comes from a historical book, article, or academic paper that discusses the Nazi Party's rise to power and the role of various political parties, including the Social Democrats, in that process.

Really? No shit.

Also, searching marxists.org (which just uses google anyway) didn't help either.