I took a class while in Art School called Vietnam in film and we studied the Pinksville Massacre. Horrific crimes occured and the criminals received almost no punishments. Calley is still alive, I tracked him down to Georgia. Medina died a few months ago in his 80s.
"My Lai was the Vietnam War mass murder of unarmed Vietnamese civilians by U.S. troops in South Vietnam on 16 March 1968. Between 347 and 504 unarmed people were massacred by the U.S. Army soldiers from Company C, 1st Battalion, 20th Infantry Regiment, 11th Brigade, 23rd (Americal) Infantry Division. Victims included men, women, children, and infants. Some of the women were gang-raped and their bodies mutilated.[1][2] Twenty-six soldiers were charged with criminal offenses, but only Lieutenant William Calley Jr., a platoon leader in C Company, was convicted. Found guilty of killing 22 villagers, he was originally given a life sentence, but served only three and a half years under house arrest.
In a separate trial, Captain Medina denied giving the orders that led to the massacre, and was acquitted of all charges, effectively negating the prosecution's theory of "command responsibility", now referred to as the "Medina standard". Several months after his acquittal, however, Medina admitted he had suppressed evidence and had lied to Colonel Henderson about the number of civilian deaths.[92]