holds up the blood-stained school shirt she says was used by her 13-year-old son when he was killed during a police operation in the favela da Mare in Rio de Janeiro, during a protest demanding justice outside the Supreme Court in Brasilia, Brazil, Thursday, May 12, 2022, the eve of the anniversary of the abolition of slavery. Brazil abolished slavery on May 13, 1888 in Brazil. (AP Photo/Eraldo Peres)
