I don't, I know it's an outsiders view but the US isn't a democracy. It's
an oligarchy. It's why the Dems ignored working class voters and the Repugs used them with cheerful cynicism.
Right now one oligarchy faction has chosen a dangerous clown as their public face, it doesn't mean they'll let him be their God emperor. He's merely useful to them right now. If he ceases to be useful, like Nixon they'll toss him under the bus.
None of this means that the symptoms of fascism or dictatorship can't take place. Attacks on civil rights, attacks on the press, attacks on voting rights. Police brutality and the use of military tactics to quash dissent. All of this is already happening. It's worth remembering that under the legal framework that Americans still have Japanese internment happened, death squads (the original KKK) happened, Joseph McCarthy's Un American Activities committee happened and yes, government sanction of torture and invasion of sovereign states on the flimsiest of pretexts happened.
What I find interesting about the history of Fascism is that people remember the strongmen themselves but not the oligarchs standing behind them. It's worth remembering that Mussolini's march on Rome was an attempt to quash socialist opposition and a general strike. Strongmen are the cudgel of the ruling classes, they're pulled out when public anger towards them gets particularly acute. That's the time to divide and rule that anger, rally some of it behind them and squish the remainder for "disloyalty", "being unpatriotic" or whatever.