Protesters took to the streets in several European cities this weekend to call for an end to the austerity policies imposed by the Troika - the European Union, European Central Bank and International Monetary Fund - in a number of countries.

Demonstrators at Saturday's protest in Lisbon wanted to show that people across Europe are unhappy with the austerity policies adopted to deal with the economic crisis, organizers said.

About 40 members of Spain's 15M movement took part in a protest in Brussels against austerity.

The demonstrators wanted to show their solidarity with the young people who staged protests in recent days in a number of Spanish cities, as well as in Lisbon and Frankfurt, Lidia Brun, a 25-year-old student from Barcelona, said.

"You realize that both the young people in Greece, as well as those in Portugal and the ones outside the European Central Bank, are all making the same arguments, complaining about the same things and going into the streets with the same indignation," Brun said.

The anti-capitalist protests in Frankfurt drew thousands of people to Germany's financial capital and ended with clashes between a small group of demonstrators and police.

Thousands of people participated in a protest in Madrid against the spending cuts imposed by the troika. EFE