World Photos - Reuters

A student holds the Brazilian flag in front of the calvary police during a protest against Brasilia's federal district Governor Jose Roberto Arruda outside the Buriti Palace in Brasilia December 9, 2009. A kickback scandal involving the opposition governor has highlighted Brazil's persistent political corruption and could hurt the opposition's chances of beating President Luiz Inacio Lula da Silva's candidate in next year's election. The scandal erupted on November 27, 2009 when video footage surfaced showing Arruda apparently receiving large amounts of cash during his election campaign in 2006.