The U.S. spent millions, first to try to defeat Allende at the polls, then to fund a gang of military murderers who staged a bloody coup on September 11th 1973, in the process of cementing which they killed a number of Chilean citizens just slightly higher than the total September 11, 2001 body count.
So the citizens of Chile likely have a very different view of 9/11 than we in the States. Of course, our 9/11 was a vile terrorist act while the killing of 3,197 Chilean citizens was state-sponsored with US backing so doesn’t qualify as terrorism even though I would suppose if you lived in Chile during Pinochet’s rule (1973-1990), you may have suffered a bit of terror wondering if you or a member of your family might be detained, tortured, and killed.
But this is old history and Chile should be happy that the US did not stage a preemptive strike in the 70s as we worried about Allende’s socialism creeping northward to our borders. (Can political movements qualify as WMDs? See Vietnam War.)