 At the summit protesters donned Robin Hood caps and demanded a tax on international financial transactions in order to provide aid to poor countries instead of catering to banking and other financial institutions.They also chanted slogans in opposition to "corporate greed" and supported a counter-G20 summit, "People First, Not Finance", organised by labour unions and NGOs such as Greenpeace and Oxfam.Though police reported 5,500 were part of the protests, the organisers estimated the number of protesters at 12,000.