Baloney. Take Iraq, for example. Yes, we killed a lot of people, arguably for bad reasons. And then, we genocided the conquered people, made the country a US colony, transplanted our own people there, and took over the oil.
Oh, wait, no we didn't. Your hyperventilating denunciation is a complete distortion of what actually happened in Iraq. We didn't go there for lebensraum. We didn't genocide an "inferior race". We didn't even go there to take their oil.
You want to criticize American militarism and American foreign policy? Fine; go ahead. But at least criticize them for what they actually did, not for a complete strawman caricature.
But you’re clearly in good company, we’ve seen it play out in grand style over the last couple years especially where everything someone doesn’t like is “Nazis”. insert circular accusation meme here
Fact of the matter is that it is an unhealthy illusion that “the Nazis” were some kind of anomaly or extraordinary thing, and that perspective that they were is precisely being peoples minds up to the point that they cannot think clearly, let alone properly classify, order, and structure things in order to solve problems or even just deduce the underlying logic.
Nothing about ethnic unity standing in opposition to a perceived enemy is in any way unique to any parameters. The plains tribes of what we call America would unite and overrun other tribes that they perceived as threats and resource competitors, and they would mercilessly slaughter and brutalize, rape, pillage, and kill. Genghis Khan may have been the single worst genocidal maniac in all of human history, even just by rough guesstimate (I don’t recall “the Nazis” launching rotten corpses full of botulism and thereby also causing the plague that killed hundreds of millions), and he also did it with what is effectively “national socialist”, i.e., unitedly working among and for one’s own nation, i.e., ethnicity. Or consider the Spanish who conquered and eradicated essentially all indigenous cultures on all of the Americas, largely including the ones the English are blamed for, even though it was the Hispanics, i.e., Spanish and Portuguese, who also eradicated and plundered and conquered the Americas for their own race/ethnicity/nation.
Am I at all getting thought about the fact that “everything is Nazis” is a stunting mentality?
“Nazis” didn’t somehow overtake and become imbued in America through “operation paperclip”, what the Nazis did for a relatively few years that was really not even nearly as awful as what had been done at that point and arguably since, considering we were supposed to have known better.
We should have known better since “the Nazis”, correct? Never again auch atrocities, right? So how is it that not only has no one been held accountable for the destruction of Iraq under obvious and over lies, murdering somewhere around probably one million people and causing untold misery and devastation in people’s lives, but Assange, who exposed the atrocities is rotting in prison and very few people even care? People can’t see the atrocities and the awful people and their atrocities in front of them for all “the Nazis” occupying their minds … I argue, intentionally, by constant focus on “the Nazis”.
To tie things back, the OP cites a liberal empire as a possible solution to the problem of US-style Dr. Mengeles, but I see the empire overriding the liberal in the first place.
The focus on "the Nazis", absent of serious analysis of the philosophical context that gave rise to them, can end up ignoring what made people believe in the ideology in the first place. There's a particular mythological victimhood for Nazis where the only way to break free is to create their own empire to subjugate (and exterminate) who they viewed as parasites. This ends up being highly problematic when people groups are viewed essentially only as good as their stereotypical economic function.
A liberal empire isn't concerned with rectifying people's economic function outside of markets and incentives. This leaves wiggle room for exploitation that lead to the US-style Dr. Mengeles experimenting on poor people (which also has a racial element since minorities can tend to be poorer.)