Colin Powell is a war criminal. No apologies or bones about it.
Colin Powell, then a young US Army Major, was charged with investigating the massacre. Powell wrote: "In direct refutation of this portrayal is the fact that relations between American soldiers and the Vietnamese people are excellent." Later, Powell's refutation would be called an act of "white-washing" the news of the Massacre, and questions would continue to remain undisclosed to the public.
Independent investigative journalist Seymour Hersh broke the My Lai story on November 12, 1969 and on November 20 The Plain Dealer (Cleveland) published explicit photographs of dead villagers killed at My Lai. The carnage at My Lai, would have gone unknown in history if not for another soldier who, independent of Glen, sent a letter to his Congressman.
Court Martial
Ron Ridenhour learned about the events at My Lai second-hand, by talking to members of Charlie Company. He then appealed to Congress, the White House, and the Pentagon and eventually got Calley charged with murder in September 1969. It was another 2 months before the American public learned about the massacre.
On March 17, 1970 the United States Army charged 14 officers with suppressing information related to the incident.
American Army Lt. William Calley was convicted in 1971 of premeditated murder in ordering the shootings and initially sentenced to life in prison, but 2 days later, President Richard Nixon ordered him released from prison. Calley served 3½ years of house arrest in his quarters at Fort Benning, Georgia and was then ordered freed by a federal judge. Calley claimed that he was following orders from his captain, Ernest Medina: Medina denied giving the orders and was acquitted.
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http://www.informationblast.com/My_Lai_massacre.html