If the new generation is not told accurate information, then not only will the new generation and the generations that follow be misguided but, more importantly, the policy makers of the future will be making decisions based on mis-assessments.
There are three areas in which the truth of the past has been tragically misrepresented: The actions of the President, the role of the media, and the buried legacy of the South Vietnamese, the Laotians, the Cambodians and, of course, the Americans who gave their lives for the liberty of others. There is no higher morality than dying for the well-being of a stranger, and that is what they did. Their enemies were not only on the battlefield: many of their enemies are still revising the history of those days, either to justify their past actions, or to cloak their consciences, or they simply don't know the truth because they have been bombarded by those who rejected it. Their recorded words and fictionalized images are, at best, what they think is true, and at worst, are meant to deceive you.