THE MANGUEIRA SAMBA samba school won Rio de Janeiro’s Carnival competition for the 20th time. This year’s parade and theme song were a drum-blasted history lesson celebrating largely forgotten black and indigenous heroes, including Dandara, a colonial-era warrior who chose suicide over slavery. Also honoured was Marielle Franco, a gay Rio city councilwoman who was murdered in March last year. “I’ve come to protest, not to parade,” her widow said.