U.S. first lady Michelle Obama watches with her daughters Malia and Sasha a demonstration of capoeira, a traditional Brazilian martial art combined with dance, during a cultural performance with young Brazilians who have participated in a range of U.S.-sponsored development programs, in Brasilia, March 19, 2011. The Obamas are on the first leg of a three-country tour of Latin America. REUTERS/Ueslei Marcelino (BRAZIL – Tags: POLITICS)