Yeah. The problem is a lot of people still would unironically say policies towards indigenous people in north America by the US gov was good. Or they'll justify it in some way that doesn't unequivocally denounce the US army, the US gov, everyone involved in those policies and the settlers themselves. Even though it should be incredibly easy to do so, many still can't reach even that bar.

You see much of the same rhetoric used towards Palestinians now days by Israelis and Americans. Along the lines of "You lost the war. Deal with it." with implications that genocide is just sort of the expected outcome of any conflict and it's fine as long as the people doing it can justify it somehow and also if they don't build literal gas ovens to dispose of the bodies... them it can't be genocide. That seems to be what they think is a "loophole" to get around the obvious comparison to "Well, the Nazis were "winning" the war for a while and also doing the Holocaust. It really sounds like you think the Holocaust was an acceptable thing for Germany to do..." "Aha! You fool! But Germany had gas chambers and ovens! Israel doesn't!" That seems to literally be the logic of every single liberal who refuses to acknowledge reality. No gas chambers = genocide? mmm, me thinks not

There's also another aspect for Americans that is the result of the unfortunate demise of the USSR and media (news and entertainment) propaganda. Many, I'd say most, Americans who know what the Holocaust was (already narrowing it down... ignorant ass country) and generally know what WWII was and what went on in simple terms think that the US literally got involved to save European Jews. That could not possibly be further from the truth. Anyone who has even studied the Holocaust and WWII at like an intro, one semester in college level knows the US didn't give a fuck about Jews fleeing the Nazis and certainly did not do D Day to liberate Jews.

And I only state all of that because it's incredibly important to understand that the retconning of US involvement in WWII and sentiments towards antisemitism around Europe at that time has been used ever since as prima facie proof that "America is good. Remember the Holocaust? Yeah, we made that stop." It's simultaneously "stealing valor" from the Soviets who did most of the stopping of the Holocaust and also that stolen valor was used to attack the Soviets. The whole narrative that was purposely crafted is incredibly evil, but I suppose you can't deny it was effective on the target population of dingus-ass Americans.

(Just for liberals in my mind: The US helping defeat the Nazis and other axis powers was obviously objectively good. We joined militarily far too late, but aid was provided to the USSR and UK the whole time, which was good and correct. However, the reason the US was opposed to the Nazis had nothing to do with their views towards Jews, black people, etc. America at that time was still a goddamn apartheid state itself treating black people as second class citizens (and often Jews as well, ironically). The civil rights legislation wasn't passed until 20 years after WWII... I don't know how else to word "shut the fuck up, liberals, please, holy shit.")