In this April 28, 1965 file photo, U.S. Marine infantry stream into a suspected Viet Cong village near Da Nang in Vietnam during the Vietnamese war. Filmmaker Ken Burns said he hopes his 10-part documentary about the War, which begins September 17, 2017 on PBS, could serve as sort of a vaccine against some problems that took root during the conflict, such as a lack of civil discourse in America. (Photo by Eddie Adams/AP Photo)
