What is the definiton of demonstrations in politics?

A demonstration is action by a mass group or collection of groups of people in favor of a political or other cause or people partaking in a protest against a cause of concern; it often consists of walking in a mass march formation and either beginning with or meeting at a designated endpoint, or rally, to hear speakers ...

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Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;