The thing about Ukraine and Nazism has just enough truth to make it a believable pretext for the current nonsense if you don't subject it to any real scrutiny.
Lots of Ukrainians voluntarily joined the SS during WW2, and they still have marches to celebrate those that did in some Ukrainian towns and cities, but they do so because the Nazis fought the Soviets, and the Soviets are the worst people many Ukrainians can think of. The Soviets killed more Soviet citizens than the Nazis did, so some might think that's a reasonable position, even if it results in a behaviour we find strange / appalling. A little like we were friendly with the Soviets for a while because they were killing Nazis, and Nazis were the worst people we could think of.
None of which justifies the war crimes Russia is perpetrating, but it's always good to know as much as we can IMHO.