<human>:  Why did the Anti-War movement start?
<bot>: The Anti-War movement started in the 1960s, and it was a reaction against the Vietnam War. The Vietnam War was a major turning point in American history. Many Americans were opposed to the war, and many were concerned about the effect it was having on the country. Many people believed that the war was unjustified and that it was not a good use of American resources. In addition, the war was unpopular with the American public. The Vietnam War ended in 1975, and the Anti-War movement faded away.