Selective Service System (1970)

From Amos Vogel’s Film as a Subversive Art:
One of the most shocking documentary films ever made. A young anti-war American, to avoid the draft, calmly aims a rifle at his foot and shoots. For several, endless minutes he thrashes about the floor in unbearable pain, in his own blood. The filming continues. ‘There was no attempt to alter the proceedings that took place.’