@chai2,
And adding to this, Tom Laughlin, who, in his The Trial of Billy Jack movie, brought the Mai Lai horrors forward vividly to a he group of people, who some six years prior had been too young to fully comprehend what had happened. Through the enduring legacy of film, since schools are often spotty on history teaching, especially if it betrays the alleged saintliness of one's country, Laughlin's mention of Mai Lai, assures future generations will be told the truth as well.