Opposition to United States involvement in the Vietnam War began with protests in 1964 against the role of the United States in the Vietnam War. It became a social movement over the several years. This movement caused and educated a debate, mainly in the United States, during the second half of the 1960s and early 1970s on how to end the war.
Many in the peace movement within the United States were children, mothers, or anti-establishment young people.
Their actions were mainly of peaceful, nonviolent events. In some cases, police used violent force against peaceful demonstrators. In 1970, four unarmed college students were killed by the Ohio National Guard, on the Kent State University campus. The incident's name is the Kent State shootings.)
By 1967, according to Gallup polls, an increasing majority of Americans thought that the military involvement in Vietnam to be a mistake.
