Merely a sliver of the total suffering through coups, wars, and corporate exploitation imposed on Central and South American countries in the spirit of America's Monroe Doctrine colonialism project spanning 200 years.
America isn't solely responsible for the decline of the indigenous population of the New World from ~130 million to ~15 million.
Check out what Spanish did a few centuries previously, annihilating ~8 million of indigenous and millions African slaves: https://en.wikipedia.org/wiki/A_Short_Account_of_the_Destruc...
Lots of blame to go around. It's essential to know all of the uncomfortable parts of history and to avoid repeating them.