Related Clues:

• 1950's-60's protest
• Kind of protest
• '60s protest of a sort
• Audit, with 'on'
• Nonviolent protest
• Certain occupation
• Audit, perhaps
• Noted San Francisco gathering
• Peaceful demonstration
• Greensboro protest of 1960
• 'Oh, to -- England'
• ___ on (take part)
• Summer of Love prelude
• Occupation of building as form of protest
• 1960s hippie event