"Four Hours in My Lai" is a documentary film made by Yorkshire Television in England concerning an infamous massacres of Vietnamese civilians in Tu Cung sub-hamlet, better known to the US Army as My Lai (4) and commonly referred to as "Pinksville", on 16th March 1968. This massacre was carried out by "Charlie Company" - members of C Company, 1st battalion, 20th Infantry, 11th Light Infantry Brigade of the US Army. The film-makers interview participants in and survivors of the tragedy, trying to understand how such an atrocity could have happened.

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