Riot
Classification

Food riots are caused by harvest failures, incompetent food storage, hoarding, poisoning of food, or attacks by pests like locusts. When the public becomes desperate from such conditions, groups may attack shops, farms, homes, or government buildings to obtain bread or other staple foods like grain or salt. T. S. Ashton, in his study of food riots among colliers, noted that "the turbulence of the colliers is, of course, to be accounted for by something more elementary than politics: it was the instinctive reaction of virility to hunger." Charles Wilson noted, "Spasmodic rises in food prices provoked keelmen on the Tyne to riot in 1709, tin miners to plunder granaries at Falmouth in 1727." In the 1977 Egyptian Bread Riots, hundreds of thousands of people rioted after food subsidies stopped and prices rose.

A police riot is a term for the disproportionate and unlawful use of force by a group of police against a group of civilians. This term is commonly used to describe a police attack on civilians or provoking civilians into violence.

A political riot is a riot for political purposes or that develops out of a political protest.

A prison riot is a large-scale, temporary act of concerted defiance or disorder by a group of prisoners against prison administrators, prison officers, or other groups of prisoners. It is often done to express a grievance, force change or attempt escape.

In a race riot, race or ethnicity is the key factor. The term had entered the English language in the United States by the 1890s. Early use of the term referred to riots that were often a mob action by members of a majority racial group against people of other perceived races.

In a religious riot, the key factor is religion. The rioting mob targets people and properties of a specific religion, or those believed to belong to that religion.

Sports riots such as the Nika riots can be sparked by the losing or winning of a specific team or athlete. Fans of the two teams may also fight. Sports riots may happen as a result of teams contending for a championship, a long series of matches, or scores that are close. Sports are the most common cause of riots in the United States, accompanying more than half of all championship games or series. Almost all sports riots in the United States occur in the winning team's city.
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