The correct answer is "Martin Luther King Jr, college students, and nearly all citizens."
Martin Luther King Jr, college students, and nearly all citizens spoke out against the Vietnam War.
After the Tent offensive, people in America started to seriously questioned the United States participation in the War of Vietnam. College students and citizens in general, as well as social leaders like Martin Luther King, took the streets and protested against the War. Many American soldiers had died in at the war front and others were wounded in a war that really had not to be fought by the US Army. For instance, college students protested at Kent University, Ohio, and the National guard shot them while peacefully protesting on campus.