From what i understood (heard it in a song I am sure)
Victor Jara had his fingers and hands chopped off in
front of that crowd before he was killed.

this is from pete seeger's web site:

Many martyrs have been immortalized in song, among them John Brown, Joe Hill, Harry Sims, Amilcar Cabral, Che Guevara, Pancho Villa, George Jackson, Fred Hampton and Julius and Ethel Rosenberg. The Chilean poet, songwriter and artist, Victor Jara, after his arrest by the junta, was ordered by the police to stop singing his songs of freedom to the other prisoners herded into the soccer stadium in Chile. When he refused, a policeman severed Victor Jara's fingers with an axe and shouted, "Now play!" Victor Jara's voice was stilled only by a volley of bullets. Arlo Guthrie and Adrian Mitchell's song, "Victor Jara" (on Warner Bros. current Arlo Guthrie album "Amigo") will etch the name and memory of Victor Jara on the hearts of all humanity for a long time to come. Holly Near also gave tribute to the memory of Victor Jara in her song, "It Could Have Been Me.":

"The junta took the fingers from Victor Jara's hands They said to the gentle poet, "Play your guitar now if you can! Well Victor started singing until they shot his body down You can kill a man but not a song when it's sung the whole world round."