complaint,
objection, gripe (informal), remonstration, dissent, dispute, disapproval
demonstration,
march, rally, campaign, dispute, picket, strike, walkout, work to rule
complain,
object, gripe (informal), remonstrate, dissent, dispute, voice disapproval, moan
(informal), make an objection, oppose
declare,
affirm, assert, insist, claim, announce, avow (formal)