> There has recently been a lot of noise from American left wing about the Supreme Court being corrupt, illegitimate, politicized, etc., etc., and calls to reduce its powers, for example.

Exactly my point? Fascist justification to reduce court/legislative power are the "internal enemies", Centrist authoritarians (extreme center) will justify it by accusing the people of being dumb/unreasonable (or any explanation that will make them saviors), and leftist authoritarians will justify it by accusing them of being the dominant class and protecting their class privileges (which, good point, but not enough to dismantle the judiciary).

> rogue court that is protecting corrupt politicians and human rights abusers

The weimar republic courts were infiltrated by nazi (starting in 1928) and the judges/attorneys were all used to aristocratic courts, were you don't judge a person the same depending on his social position, so the nazi only had to eliminate the "due process" part of any arrestation, but overall did not change the institution.

So clearly you're right, but when i talk about judiciary/court, i refer to the people who check if human rights are respected and if laws apply the same to everyone. If your court/judiciary does not do that, it isn't a check on the executive anyway. (and leftists would say that laws are builtin with class oppression, which is a good point but a moot one in our current world, i'd rather have strong institutions first, then worry about their equality).