"They were rioting because the US drove a wrecking ball through their economy. The documents have been declassified for decades, straight from the CIA. The whole situation was manufacturered to produce the coup that was backed by the US and put a horrific tyranny in place. You are the last person in earth to believe it happened organically."
I feel like this was something you got really mad about with your hippie friends back then.
In reality, the US supported truckers, who were striking against a regime that wanted to nationalize the trucking industry. And they supported the opposition media. Not that it was necessary, given that virtually everyone in Chile had abandoned support for Allende by 1973...including his former allies.
But you don't know any of this...probably because, like climate change, it's going to inject questions into the narrative. And the last thing you want is someone having the complete picture before they make a decision.