The Russian invasion of Ukraine taught me a big lesson: once tensions are whipped up enough, the average human loses their mind. Going on Reddit, it was almost unreal for me, watching everyday Westerners wish death & destruction on everyday Russians - for the actions of the Russian Government. Yes, Russia was wrong to invade Ukraine.
But hundreds of thousands (millions?) of Russians have protested and opposed their leadership. That doesn't matter once nationalism is in the picture.
Which reminds me of the Americans who casually say the US should bomb the Three Gorges Dam & kill hundreds of millions of Chinese in the event of a war. Nationalism turns the average respectable human into something else.