a collection of anarchists and anarchist affinity groups that organize

a group of ers dressed

a group of individuals that unites during a protest, demonstration or event involving class struggle, and generally wears all black

a group of protesters often dressed in black , who cooperate in small, autonomous affinity groups to resist police

a group within a group of a left-wing oriented protesters , often dressed in black clothing and/or wearing masks or face-covering articles

A black bloc is an affinity group that comes together during some sort of protest, demonstration, or other event involving class struggle, anti-capitalism, or anti-globalization. Black clothing and masks are used to make the bloc appear to be one large mass, promote solidarity, create a clear revolutionary presence, and also to avoid being identified by authorities.