France. Ile-de-france Department. Paris. Two seat and talk together below a giant phgotography celebrating a women's march and demonstration. A demonstration or street protest is action by a mass group or collection of groups of people in favor of a political or other cause; it normally consists of walking in a mass march formation and either beginning with or meeting at a designated endpoint, or rally, to hear speakers. Actions such as blockades and sit-ins may also be referred to as demonstrations. 6.11.10 © 2010 Didier Ruef