I get the strength of your feelings, but for now the MAGAts aren't actually killing people. Yet, maybe, but that remains to be seen. By calling for their deaths, and doubling down on it, you are making yourself worse than them. Killing political opponents is something we see in places like Russia and Iran, not in a (supposedly) advanced democracy like the USA, where a wide political spectrum is meant to be part of the design.
(BTW I'm British, and a big fan of what America SHOULD be. Somewhat less enthusiastic about what you've become.)
The reason we're seeing this sort of stuff coming to the forefront, IMHO, is because the mainstream political parties aren't listening to the people's legitimate concerns about immigration, poor public services, lack of work and so on. So when the Nazis strut in, apparently championing all that stuff, it's hardly surprising when people vote for them. The solution is not to murder those voters but for the mainstream parties to take that stuff into consideration and make sure the far right remains "fringe". There will always be far-righters, the trick is to minimise their influence.
The rise of Nazism really needs to be a wakeup call for the moderates: you aren't listening to some really important stuff, you need to start, and no it's not "racist".