Never forget what prompted their declaration of war
The FBI murder of 21-year old African-American activist Fred Hampton.
http://www.imdb.com/title/tt0067456/
It's easy to dramatize the lives of a few terrorist individuals, not so easy to dramatize a terrorizing government (killing & intimidating dissidents, repressing dissent, illegally spying on its own citizens, duping Americans into a war that cost 58,000 young American lives, terrorizing SE Asian civilians (perhaps as many as 400,000+ killed), secretly bombing Laos, creating an American heroin plague).
It will be interesting to see how well the script handles the power struggles that set America ablaze in the sixties and especially, the moral complexity inherent in those struggles.