Anarchism has historically been a current within the larger Socialist movement. Socialism is not just establishment sheep-herding rhetoric like Bernie Sanders' or the French Parti Socialiste; nor just the centrlized-state authoritarianism of the USSR. In fact, the labor movement in the US once had more prominent Anarchist leaders than state-socialists - the struggle for the 8-hour workday and May 1st, the Industrial Workers of the World, etc. And there are Anarchist traditions in the workers' movements of Latin America and Europe of course, and to a much lesser extent in Asia early 20th century Asia.