Say that to South America and all the dictators you created here... many of us are still dealing with the aftermath of Nixon's conveniently named "America for the Americans". Hell, you even created the whole mess with Iran and every single terror that came afterwards just so you could retain some nice bucks from the oil fields.
And sorry for what I'm about to say, but as far as many of us are concerned, you're a gringo; America is the continent, just like we call people from Europe "europeans, people from Asia "asians" and people from Africa "africans", yet for some reason you think only the people from the USA are the ones who can be called "americans"... and damn everybody else who happend to share the continent, including your friendly neighbors of Canada.
I am VERY much aware that to judge an entire country-worth of people for the past or present actions of their leadership is one of the fooliest and destructive things you can do, but you need to understand that many countries-worth of people got screwed over for the sake of the USA benefit, real or even imaginary (just ask Cambodia), but unlike many of the countries you mentioned (who are their own degree of monsters), they don't have the nerve to paint themselves as the good guys for doing the equivalent of war crimes sans Putin and Abe, but that's for later.
Yeah, the main problem here is that you're using the excuse of "but that other person did that too" in order to excuse the crime. A crime is a crime, no matter who does it; naming another group or individual who also did something horrible does not excuse you for what you did, it simply increases the amount of people that ought to atone, apologize or at least aknowledge their bad actions... not gloss them over or pretend they didn't happend.
Sorry for the rant, but you have no idea just how badly Pinochet's dictatorship has scarred my country's psyche up 'till now, so seeing you write that "excuse" simply made me act up.