I think most people below a certain age don’t have idealistic view of the US at all. People with even a little interest in politics or modern history are aware of the US illegal actions all over the world.
I’m not sure what major things US have done in South America in last 5 or 10 years other than perpetuating trade wars and continuing the war on drugs. Their involvement in major subversion and undue influnce pretty much ended after the cold war no?
My focus was on Russia in the very recent past and their involvement in subverting democracies that have been established for decades. Their effect on the Brexit vote and 2016 US election is still being determined.
I still maintain no country operates on the scale Russia do when it comes to subvertion and aggression. That doesnt even include thier backwards society and false democracy