A police officer readies to throw tear gas grenade as a demonstrator protect himself on the ground during a rally in support of Brazil’s suspended President Dilma Rousseff and against acting President Michel Temer in Sao Paulo, Brazil, Monday, Aug. 29, 2016. Police fired tear gas against the demonstrators. Fighting to save her job, Rousseff appeared before congress for her impeachment trial, to defend herself as her accusers say she hurt the economy with budget manipulations. (AP Photo/Andre Penner)