Political demonstration

A political demonstration is an 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. It is different from mass meeting.

Monday demonstrations in East Germany (1989–1991) helped bring down the Berlin Wall.
Demonstration in Canada against oil tankers, 1970
Greece, 2013: a working-class political protest calling for the boycott of a bookshop after an employee was fired, allegedly for her labor-rights political activism
Stockholm, 2015: protesters demonstrate against the city's new drastic plans for the Slussen area and interchange
Jakarta, 2019 : Protesters occupying the Gatot Subroto Avenue in front of the DPR/MPR Building

Actions such as blockades and sit-ins may also be referred to as demonstrations. Demonstrations can be nonviolent or violent (usually referred to by participants as "militant"), or can begin as nonviolent and turn violent depending on the circumstances. Sometimes riot police or other forms of law enforcement become involved. In some cases, this may be in order to try to prevent the protest from taking place at all.[citation needed] In other cases, it may be to prevent clashes between rival groups, or to prevent a demonstration from spreading and turning into a riot.