That toxic jingoism and nationalism wasn’t a purely German phenomena, it was present in all the major powers at the time. There weren’t any good guys in WW1, it was the final and ultimate battle of the monarchic age with the ‘Great Powers’ fighting for influence and power.
Fun fact some people may not know, after the armistice, the allies continued to blockade Germany under peace terms were finalized, exacerbating a famine that cost another 100,000+ civilian lives post-armistice. Because you know, we were the good guys..
The peace conditions not only forced German to radically change its governing system, but imposed massive territorial changes also.
Here's Europe in 1914:
And then Europe Post War:
Gosh, who'd have thought that carving up a country and leaving it with non-contiguous regions would have caused any problems ("Hey there Danzig! We'll be seeing you later!"). The post war settlement largely resulted in lots of regions with angry German citizens being handed over to other countries, and new countries being created that resulted in massive chaos. They also confiscated the German's African colonial territories, but didn't do anything silly like actually freeing them, they were just added to the colonial empires of the victorious great powers.
But of course a land-grab and forced government change wasn't enough, the victors also wanted recompense of their costs. Fun quote I stumbled across while checking the terms again, by renowned radical extremist, John Maynard Keynes..
Yeah, when people like Keynes think your peace treaty is so shit there should be revolution, it's probably not the best peace treaty. But then again the Daily Mail ran a campaign insisting on heavy reparations, so there's a recommendation we can trust right?
I'm in a quoting mood, so I'll end here with a few more from notables of the time..