From Wikipedia: "For What It's Worth (Stop, Hey What's That Sound)", often referred to as simply "For What It's Worth", is a song written by Stephen Stills, first recorded by Buffalo Springfield on December 5, 1966, and released as a single on Atco Records in December 1966; it peaked at no. 7 on the Billboard Hot 100 chart in the spring of 1967. The song is often associated with the Vietnam War because students, "flower children" and other young people often clashed with police at anti-war protests and other demonstrations during the counterculture era.

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