Black symbols

domestic cat with black fur

tactic used by left-wing protesters who wear black clothing and masks; used to conceal wearers' identities from the police and politically opposing organizationg, protect from the pepper spray and making group look like large unified mass

computer hacker with malicious intent

one of the flags flown by Muhammad in Islamic tradition

anarchist mutual support organization that supports lawbreakers in accordance with the goals of the revolution

Islamic fundamentalist movements as a symbol of jihad

Symbol of mourning

Wikimedia list article

fictional symbol with different meanings

heraldic figure