Former President of Brazil Luiz Inacio Lula da Silva (L) and Dilma Rousseff react during a mass in memory of Lula's wife Marisa Leticia in front of the headquarters of the Metalworkers' Union in Sao Bernardo do Campo, in the outskirts of Sao Paulo, Brazil, on April 7, 2018. Brazil's ex-president Luiz Inacio Lula da Silva turned himself in to federal police on Saturday, after supporters tried to prevent him from handing himself over to the authorities. (Xinhua/Rahel Patrasso)