"salt march" of 1930, in which he led a mass protest against salt taxes levied by the British.

万宝龙说仅打造241支钢笔来纪念甘地在1930年其著名的“盐路长征”上走过的万里征程；在那次长征路上，他曾引领无数群众反对英国征收盐税。

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The protest campaign has used mass strikes and demonstrations to press its demands.

抗议活动采用了大规模罢工和示威游行来有力地表明其要求。

《柯林斯英汉双解大词典》

Pakistani security forces largely succeeded in preventing mass demonstrations by political activists and lawyers earlier this week by blocking roads and arresting hundreds of protest leaders.

VOA: standard.2009.03.15

President Asif Ali Zardari has said the government wants to end the mass protest through negotiations, not force.

BBC: Pakistan government seeks end to cleric Qadri's protest

Clashes briefly erupted on Tuesday but the mass protest has been largely peaceful.

BBC: Pakistan deal reached to end cleric Qadri's protest

The ballot-rigging turned that support into a mass protest against the system itself.

ECONOMIST: Iran and the world