1873 - Proclamation of the First Spanish Republic. Francisco Pi y Margall (pictured) assumes Presidency. Advocates Federalist program inspired by Pierre-Joseph Proudhon, becoming popular among Spanish anarchists. Andalusia & several cities in the southeast establish a libertarian federalism. Pi y Margall is promptly overthrown by Monarchist forces. The town of Carthagène resists a government takeover for several months.
1919 - 67 anarchists are arrested & face deportation in the wake of a bomb explosion marking the beginning of the Palmer raids in the USA.
1951 - The Japanese Anarchist Federation reconstituted this month. Simultaneously, the anarchist communists set up the Japan Anarchist Club (Nihon Anakisuto Kurabu).