Dr. King delivered this speech on April 4, 1967 at Riverside Church, it was his major public statement against the Vietnam War. During his speech, Dr. King discusses how the citizens of Vietnam were stuck in the crossfire, and how the burden of the war was placed on America's lower class, given that they were most likely to be sent off to Vietnam and because Johnson's "War on Poverty" was being derailed by the country's foreign policy. 

While some supported Dr. King's stance, a total of 168 newspapers across the nation denounced him, and Senator Barry Goldwater from Arizona argued that the speech "could border on a bit of treason." 

The transcript of the speech can be found here.   

In March of 1966, Muhammad Ali conscientiously objected to the draft for the Vietnam War saying, "My conscience won't let me go shoot my brother, or some darker people, or some poor hungry people in the mud for big powerful America." His objection led to him being stripped of his heavyweight championship title, being exiled from boxing, and he was initially convicted of violating service and possibly serving 5 years in prison - while he was out on bail, his passport was taken away, which also caused his income to be limited. 

During his exile from boxing, Ali spent his time in Chicago - where the Mayor refused to call him by his Islamic name, and where the Governor called him "unpatriotic." 

On February 15, 2003, an estimated 6 million to 11 million people arrived in Washington DC to oppose the war that President Bush declared on Iraq. The protest is considered one of the largest single-day protests. While the turnout was impressive, and showed that a significant population of Americans were against the war, it wasn't until 2005 that there was a significant change in public opinion and others started to turn against it. 

The video on the left shows Angela Davis speaking at the march in Washington DC.