25 April 1974Officers overthrow the Caetano dictatorship. General Spinola appointed president.1 May 1974100,000 people march through Lisbon to celebrate May Day.27-28 September 1974Right plans coup. Spinola calls for demonstration of the "silent majority". Workers build barricades and block bridges. Right wingers arrested. Spinola resigns.11 March 1975Right wing, led by Spinola, attempt coup by attacking left wing soldiers in Lisbon. Workers besiege police barracks and surround the paratroopers attacking the soldiers, arguing with them. Coup peters out and Spinola flees to Brazil.
25 June 2005