The list of celebrities who opposed the Vietnam conflict is impressive and included Bob Dylan, Joan Baez, John Lennon, Jane Fonda, Leonard Bernstein, Jasper Johns ….
In 1966 the boxer Mohammed Ali refused to serve in the U.S. military and became a conscientious objector. Jimi Hendrix, in 1969, at Woodstock, played the American Anthem on an electric guitar, adding bomb sounds using vibrato and feedback.