I don't mean to get all edgy, and not to detract from your general point, but please don't forget that the U.S. supports (and has even installed) foreign regimes that do these (and worse) things - albeit to people in other countries.
On the foreign stage, America does and has backed horrendous dictators and fascists. As does and has every other empire in history. There is, though, a certain underlying theory in American politics - both right and left - that is disgusted with the notion of engagement in foreign wars and doesn't have the will to occupy foreign territory. This is what you would hope for as a natural result of a functioning democracy where people had a short tolerance for the personal deprivations inflicted by a state bent on imperial expansion.
No, it ain't Switzerland. I wish it were. But speaking with Syrian refugees and Lebanese and Tibetan dissidents and South Vietnamese and Cubans I've known in my life, I've kind of come to the conclusion that international relations are a jungle where most states are predators and most individuals are prey. America does at least give lip service to the notion that individuals shouldn't be preyed upon, and tries to export that meme.