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Riot from WikiPedia:

A riot is a form of civil disorder characterized by disorganized groups lashing out in a sudden and intense rash of violence against people or property. While individuals may attempt to lead or control a riot, riots are typically chaotic and exhibit herd behavior.

Riots often occur in reaction to a perceived grievance or out of dissent. Historically, riots have occurred due to poor working or living conditions, government oppression, taxation or conscription, conflicts between races, food supply or religions (see race riot and pogrom), the outcome of a sporting event or frustration with legal channels through which to air grievances.

Riots typically involve vandalism and the destruction of private and public property. The specific property to be targeted varies depending on the cause of the riot and the inclinations of those involved. Targets can include shops, cars, restaurants, state-owned institutions, and religious buildings.

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