Trump admin did put people in prison and then deported them, for doing nothing more than protesting.

Not as bad as China sure, but not as good as other civilized nations.

Let's just clarify that visitors don't have the same rights as citizens. Whether or not you agree with the current administration's policies hopefully we can agree that it is entirely reasonable for them to deport foreign political dissidents more or less at their discretion.

If you want to put this to the test try crossing the Canadian border and when they ask you the purpose of your visit respond that it's to attend a protest.