I don’t feel like the comparisons to Hitler are useful, at least when talking about the current US administration.
There are lots more recent examples — Russia in the early 2000s under Putin, Hungary under Orban, South Africa under Apartheid — where democratic norms were gradually eroded, and the international community just sort of sighed and said "oh well, the people have spoken".
I think this mostly comes down to (1) people are more aware of Nazi Germany and thus its easier to use that context than another and (2) the Nazis were extreme even by comparison to their contemporaries and thus have been (presumably) studied the most.
Yeah, but it breaks down because Trump also knows that history, and knows that people want to compare him to Hitler, so he does a bunch of things that make the comparison harder.
Trump says things like "there's no greater friend to Israel than me" and "I'm the best president for black people". One of his most viscerally anti-immigrant lackeys (Stephen Miller) is Jewish.
Trump’s choice of "illegals" as the cause of America's woes is smart, because (1) they can’t vote and (2) even American-born children of undocumented immigrants hear that and think "oh but he's not talking about us". He was careful to not say "Latino immigrants", even though that's what a lot of his white supporters heard.
The actions are right out of Hitlers playbook. Find a group or groups, to blame and demonise, that are powerless. Deflect and encourage the wider populations grievances and dissatisfaction onto them to provide a common enemy and warning to others that they could be next if they don't join in. That together with establishing a cult and encouraging extremes echos the establishment of the Natzi party surely?
Berlusconi is the architect of the modern oligarchy. Control the media, control the public opinion and narrative. I think that what is happening in America is something new though. The dismantling of the US government is weird on it's own, but the step down from US soft power is what really makes no sense. The previous 80ish years of US world dominance was build on a combination of military might and soft power. Europe was rather ruined after WW2, the reason it's as advanced as it is today, and the reason we are/were such close allies with the USA is because of programs like the Marshall plan. Which was essentially the USA giving Europeans the money to buy American products. Stuff like access to US produced tractors revolutionised European farming as an example. On the US side this meant that the USA investment into Europe made it possible for the American wartime industry to restructure itself. So that instead of producing tanks, factories could produce farm equipment and so on. Total win-win.
Military power is necessary, but political influence is bought with soft power and diplomacy. The reason USA has military bases over most of the world. Places which allows America to have places to "store" all that military might outside the USA is because it has allies. The Russian loss of their Syrian bases is a good example or what happens when you lose that soft power. That same soft power is also the reason American brands can sell their stuff globally. Basically the entire American entertainment industry and all the foreign aid programs are giant advertising ventures, selling the American lifestyle. When that soft power is gone, America will still be capable of getting it's way in many cases through threats. People don't respond well to that though. With USA rivals more than happy to step in, you shouldn't be surprised to see Coca Cola replaced by some Chinese cola brand sometime down the road. This is obviously a semi ridiculous example, but I think it's a good illustration if what could happen. That same thing will affect US tech dominance as well. Here in Denmark companies are now actively looking for exit strategies from the American cloud because of the increased risk. I don't think anyone seriously expects something to happen, but at the same time, there is nothing companies hate more than risk. The reason Google Cloud never made it in Europe is because it has more risk than Azure and AWS, and with European alternatives having caught up... Well...
What is perhaps even worse is that the only reason the USA can function with its current deficit is because of the Dollar. If BRICS succeeds in moving half of the worlds population away from the Dollar, the American "empire" will fall considering it's the only "empire" in the history of mankind which has been capable of maintaining it's world dominance while also increasing its deficit.
Hitler and Nazi Germany might be the example everyone knows, and Musk performing his "gesture" doesn't exactly help matters. There doesn't seem to be a real long term plan behind what the aristocracy in the US is doing right now though. At least not one which will keep them safe from each ohter or society as a whole. Berlusconi and his buddies never went to prison after all, no one fell out of a window and so on.
There are lots more recent examples — Russia in the early 2000s under Putin, Hungary under Orban, South Africa under Apartheid — where democratic norms were gradually eroded, and the international community just sort of sighed and said "oh well, the people have spoken".