A demonstrator carries a placard reading “One more day of reflection” as she dances with others at Sol Square on May 21, 2011 in Madrid, Spain. A growing number of angry Spaniards have, encouraged by youth groups and social media campaigns, taken possession of the Sol square setting it up with tents and kitchens ahead of Sundays regional and municipal elections held in Spain. (Photo by Jasper Juinen/Getty Images)

Demonstrators dance and play their drums at Sol Square on May 21, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

Demonstrators gather at sunset after another day of protests at Sol Square on May 21, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

Demonstrators shows their home keys as they attend a meeting during a continued protest at Sol Square camp on May 21, 2011 in Madrid, Spain. (Photo by David Ramos/Getty Images)

Demonstrators gather after another day of protests at Sol Square on May 21, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

Demonstrators show their hands in protest at Sol Square on May 21, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

The King Charles III monument is seen surrounded by tents and protesting Spaniards during a rally on Puerta del Sol square on May 19, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

A man smokes a cigarette as he camps out with others at Sol square on the morning that voting in Spain's regional elections begins on May 22, 2011 in Madrid, Spain. (Photo by Jasper Juinen/Getty Images)

Young people camp out at Sol square on the morning that voting in Spain's regional elections begins on May 22, 2011 in Madrid, Spain. Despite a ban on political protests ahead of Spain's regional elections the number of demonstrators, angry with the high youth unemployment and economic policies, gathered in the capital's central Puerta del Sol square has increased to about thirty thousand. (Photo by Jasper Juinen/Getty Images)