As I’ve noted before, there was a split in the Nazi movement between the leaders of the SA, who took the “socialism” in National Socialism seriously, and more establishment figures in the business world and the regular military. Hitler ultimately chose to support the establishment figures, and the SA was humbled.
Trump doesn’t have an SA; his ties to the right-wing militias never developed to that level. He does, however, have plenty of followers on the internet who have had some success keeping potential opponents in line with threats of violence. He also has a Secretary of Defense who appears to want to turn America’s regular military into a right-wing militia usable for partisan purposes in our cities. If Hegseth succeeds in changing the culture of our military, Trump won’t need an SA, let alone a Night of the Long Knives.