A man, wearing a mask depecting Spain's Minister of Treasury and Civil Services Cristobal Montoro and other NGO activists dressed as public services workers perform in front of a Bankia Bank office in Madrid on May 23, 2013 during a protest organized by the Robin Hood Tax Campaign. The campaign is organized by several NGOs, notably Owfam and Attac, who propose a financial transaction tax in order to generate funds to fight against poverty and global warming. AFP PHOTO / JAVIER SORIANO