That's not going to stop authoritarians from harassing. Want an example of how this played out?

United States v. Wong Kim Ark (1898) was the SCOTUS case that declared if you were born in the US you were a citizen. You think Mr. Ark was okay from harassment after this case was ruled in his favor? Less than 3 years later he would be held in Texas while local authorities tried to deport him under the Chinese Exclusion Act ignoring his previous ruling (that was national news, and they'd be fully aware of).

Then after winning his freedom, that he was already granted, he was arrested again in SF where they tried to deport him as well. Then after getting released, for something that he has already proven twice now, he went back to China and never returned to the US.

Institutions do not stop authoritarians.