” Germany’s slide into a popular embrace of authoritarianism in the 1930s “
Note the only thing I see coming out of Trump’s mouth that could be construed as “authoritarian” is per immigration. That is not authoritarian, that is establishing order along constitutional lines.
In fact, today, given the amount of government authority and its abuse of it, you can hardly describe the U.S. as “liberal”.
The majority of European countries in the 1930s were “authoritarian.”