Demonstrators gather in a square near to the parliament during a protest in Madrid, Spain, Saturday, Feb. 23, 2013. Thousands of people are marching on Spain's parliament to protest austerity measures imposed by the government. Saturday's protest comes on the 32nd anniversary of a failed attempt by the armed forces to overthrow the government. Several protest groups joined forces under a single slogan called "Citizens' Tide, 23F," referring to the Feb. 23, 1981 attack by armed forces on Spain's parliament.