The big failure America in the Vietnam War is the shameful history of tragic scene for arrogant American, whose pain is still difficult to ease. The crucial event also had a profound impact on today 's international situation. It is believed that the failure included political, economic, military and cultural background and other aspects, which are that common. When it comes to the controversial subject, I hope to put forward some fresh views from where I stand. 1. Opposition to the U.S. involvement in the Vietnam War The two events protested the war in Washington, D.C. On 24 April 1971 and Anti-Vietnam War demonstration in 1967 demonstrate a large number of the American population were opposed to U.S. involvement in the South Vietnam during the course of the Vietnam War. Public opinion was strongly against the war from 1967 to 1970, which resulted in only a third of Americans supposed that the U.S made a right decision over participating in Vietnam War. It is why special groups led the anti-war movement to avoid America 's involved in the Vietnam War. The anti-war movement grew increasingly popular in American society, which led to America lost numerous supporters. Some advocates with peaceful wishes advocated the U.S could withdraw troops sent to fight in the Vietnam Wars for the reason that it would contribute to less human bloodshed and less property damage in the region. Early opposition to U.S. involvement in Vietnam drew its attention in the Geneva Conference of