And then you will have to pick a new group to blame all the ills of society on.
This is the chilling thing about it, let's say the Nazis got their way and eliminated every last Jew, then what? Do you think that kind of blood lust that wants to exterminate an entire group of people is going to stop at just one?
Nope, it would continue, it would then target other races, then it would be about who is the "most" white, the most "pure" and on and on until the entire human race would render itself extinct.
This is in fact similar to a problem I have with the SJW/Marxist/Communist mindset, where does it end? How far do you take the quest for perfect "equality" before you've created a Harrison Bergeron type scenario? Or worse, a full on Jim Jones style mass suicide because the world will never live up to the insane standards of lunatic SJWs.
And that I think is the core problem I have with Nazism/fascism and Marxism/Communism, that fanatical quest for some sort of perfect "ideal" whether it's an ideal of some kind of perfect "equality" or an ideal of some kind of perfect "racial purity"
Because simply, it's not a perfect world we live in, that sort of fanaticism can only become a destructive force in the long run when people want to force it onto an imperfect world and take it to it's logical extremes, which in both respects can only be anti-human and anti-life, because if you have some sort of uncompromising ideal of "perfection" that imperfect human beings will never live up to, how long until you earmark the human race itself for destruction?
In other words, be wary of any sort of fanatical movement that offers you Utopian dreams of some "perfect" society so long as you give up your individuality and march in line with some group and never, ever question things, because that dream is sure to turn into a nightmare.
You're right, we have changed a lot. However, it's been mostly in the fields of science and technology. The fundamentals of human nature haven't changed. Charlie Chaplin's speech at the end of "The Great Dictator" talked of the "aeroplane" and "radio" bringing mankind together. But that didn't stop WWII from happening.
You're acting in good faith and it was good talking with you. If you're interested feel free to listen to/watch the several videos I posted in my previous several posts in this thread. They cover far more than I have here and much more articulately than I can.
Human nature hasn't changed and human nature is flawed, because as I said it's not a perfect world we live in.
But on the flip side to what I said above, the imperfection of the world doesn't mean we give into despair and just throw our hands up and give up on life, on the contrary we should always work to the betterment of mankind and trying to create peace between different groups and cultures is just part of what we do in modern civilization, going against base human nature has always been what we do with civilization, so why stop now?
But it's only when we give into that sort of fanaticism I mentioned do we lose sight of reality and that's when we do more harm to ourselves than good.