An anarchist is someone who believes in the idea of anarchism, a political philosophy that advocates for a society without government or hierarchical authority. Anarchists argue that people can organize themselves cooperatively and manage their own affairs without the need for a centralized power. They often emphasize individual freedom, voluntary associations, and mutual aid. Anarchism has various branches, including anarcho-communism, which promotes communal ownership of resources, and anarcho-capitalism, which supports free markets without government intervention. Anarchists have historically been involved in social movements, advocating for workers' rights, civil liberties, and anti-authoritarianism.