Kathy Murguía:  I recall singing this song both in Berkeley on the Peace Marches and in Holly Springs , Mississippi at the local Church meetings during Freedom Summer (1964).

When the cops wanted to kick us out of Sproul Hall Plaza , that's what we sang.  When the Hell's Angels converged at Sather Gate with their roaring cycles, that's what we sang.
What I love is that counterpoint---you can have people talking back and forth to each other in this song.

It was translated into Spanish in the fall of 1965, and was a hit on the picket lines.  The NO aspect became a source of conviction that we'd never give up.  I loved the counterpoint used at times to echo the NO.  It was powerful.