I feel we're riding a knife's edge and there's a hurricane brewing in the gulf of absurdity.
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Incidentally, I feel like this is why it is so hard to actually learn from history. You can read about the 1918 'Spanish' Flu, but you think "we're smarter now". etc.
Also, if your grandpa likes telling war stories, it's only because he survived.
As someone whose parents, grandparents, and entire family lived in Italy through WWII (and one grandfather who lost an eye in WWI), nobody liked talking about it.
If they did talk about it, it was usually brief and imbued with a feeling of "thank God it's over. what a tragedy that we were all used as pawns by the political class for nothing more than selfish ambitions."
There was a prominent component of political scheming to his rise to power, and it was a totalitarian state that murdered political opponents even before it got to genocide, but he was enthusiastically supported by a large portion of the German society.
I've felt this myself a few times now. Both when Trump was attempted assasinated and now with Charlie Kirk. I am sad that public discourse and our democracies are kind of unraveling these days and that this is just a sad reality of that fact. As far as Trump or Charlie Kirk go, I have no sympathy what so ever.
I'm not sure I really want to blame anyone for things becoming like this, it all seems like par for the course in the world we've created for ourselves. I just wish we were able to stop before this.