What does a black cross mean?

The black cross symbol represents the Anarchist Black Cross, an organization that provides support for prisoners who have been imprisoned for struggling for freedom and liberty, according to the Anarchist Black Cross Federation. The Anarchist Black Cross provides these prisoners with political literature and legal support.

The Anarchist Black Cross supports prisoners who have committed crimes in the name of anarchist beliefs. The organization's main focus is eliminating all prisons. Unlike Amnesty International, which focuses on human rights, the Anarchist Black Cross supports those who strive to reach revolutionary goals that are sanctioned by the organization, even if such activities are illegal.