Who opposed the Vietnam war?

Early in the war (prior to 1967) there was very little anti-war activity.

By 1968, leading figures nationwide were opposed to the war:

Rev. Dr. Martin Luther King, Jr.

Boxer Mohammed Ali

Senator Robert Kennedy

Vice President Hubert Humphrey

Senator Eugene McCarthy

Newsman Walter Cronkhite

Chicago Seven

By 1970, antiwar and anti-draft movements were on every campus in the country. 56% of the American people called the war a 'mistake'. Black and Chicano opposition to the war grew, especially after the killing of a Mexican-American newsman covering a protest.

In 1971, Senator J William Fulbright began a series of Senate hearings into the war. The first antiwar veteran to speak was future Senator John Kerry.

Also in 1971, the Senate dealt a blow to the war support by repealing the Gulf of Tonkin Resolution that had allowed the president to fight a war without a declaration of war.