Two icons of 60s protest music joined a whole new movement Tuesday.
David Crosby and Graham Nash headed down to the Occupy Wall Street site to perform an acoustic set and show their support for the now nationwide protest.
With songs like "Our House" and "Teach Your Children," the folk-rock supergroup Crosby, Stills, Nash and Young had contributed much to the soundtrack of the civil rights and anti-Vietnam War era of the '60s and '70s.
Crosby and Nash, as Crosby, Stills, Nash, & Young (featuring occasional bandmate Neil Young), are perhaps best known for the song "Ohio," recorded in 1970, which spoke out against the killing of four Kent State students by National Guard soldiers during an anti-Vietnam War rally.
Two members of the original group brought a touch of that back to 2011: Crosby and Nash performed near Zuccotti Park, the center of the Occupy Wall Street movement.
The set began at 3 p.m. near the corner of Cedar Street and Broadway.
The duo join other musicians who have performed acoustic sets (amplification is not allowed in Zuccotti Park, where the protest is centralized) including Tom Morello, Talib Kweil, Sean Lennon, and Anti-Flag.