A person employed by the police or other entity to act undercover to entice or provoke another person to commit an illegal act.

People who engage in protests wearing black clothing and masks and engaging in property damage. The tactic was developed in the 1980s by anti-nuclear activist autonomists, and was subsequently adopted...

For most of the public, it is difficult to tell the black bloc from neo-nazi skins, and that is one of its problems.

Legitimate anti-NATO protesters are determined to use non-violent civil disobedience to block the summit. In order to provide an excuse to use batons and rubber bullets against them, agents provocateu...

Fascist paramilitary groups forming a bloc operating in the Italian Social Republic (in northern Italy), during the final years of World War II, and after the signing of the Italian Armistice in 1943.

An ultra-nationalist bloc in Russia in the early 20th century noted for their direct action methods, including pogroms and terrorist attacks against liberals and leftists.

Fascist paramilitary groups in Italy who dressed in black, and assembled in blocs to attack unionists and leftists. Subsequently fascist groups in Germany and Britain also dressed in black and used si...

Behind the rhetoric of the "alt-right" about white nativism and protecting American traditions, history and Christian values is the lust for violence. Behind the rhetoric of antifa, the Black Bloc and...

Challenging the Right requires not only anti-fascist actions in the street, but organizing to reach those who may be attracted the the appeal of the Right and offering an alternative social vision. Th...

Whose interests do the violent actions of the black bloc benefit? The interests of the general public in using free speech as a means of political change? Or the interests of the authorities in provid...