Members of student groups and labor unions hold a protest demonstration as the Americas Summit is being held, in Cartagena

 
Members of student groups and labor unions hold a protest demonstration as the Americas Summit is being held, in Cartagena
Members of student groups and labor unions hold a protest demonstration as the Americas Summit is being held, in Cartagena April 14, 2012. Heads of state are meeting here from April 14-15. The banner reads, "Close Guantanamo." REUTERS/Joaquin Sarmiento (COLOMBIA - Tags: POLITICS BUSINESS)