Ken Loach is pretty cool

Pablo, a Chilean refugee in London, writes a letter to the families of the victims of the September 11 attacks, reminding them of "his" September 11: Chilean coup of 1973, when the general Augusto Pinochet implemented a coup d'état (backed by the US) against left-wing president Salvador Allende, democratically elected in 1970. Pablo narrates in his letter of US involvement in financing of right-wing and subversive groups, up to the coup, and of the violence and torture suffered by him and his countrymen. Forced to first five years in prison and then into exile, he declares that he can no longer return to Chile because his family and children are now born and raised in the United Kingdom. Pablo concludes his letter with the hope that, as he will unite in the memory of the victims of September 11, 2001, so they will join him in memory of the victims of September 11, 1973.

Doing an anthology movie about 9/11 and making your section about Chile is based.