The Battle of Chile is a three part documentary about the military coup against Salvador Allende in the 1970s. Patricio Guzman and his associates recognized that crazy things were about to happen and took to the streets to capture as much footage as they could, knowing that a record needed to be kept. One of the cameramen was disappeared, tortured, and presumably killed, while the others smuggled the footage out to Cuba.
It may feel too prescient for American audiences now. Gods, it was plenty powerful to me as an American watching in 2012. It is well worth your time.
I enjoyed the first book! I've got the second tucked away somewhere, too.