Exile, arrest and torture: why Brazil's pop artists risked everything

Forget Warhol’s electric chairs: Brazilian pop artists in the 60s showed the most extreme violence – and they fought the dictatorship’s tightening grip when the stakes could not have been higherThe banner is stark – a silkscreen of a corpse, and beneath it just four words. Seja marginal, seja herói, it reads in Portuguese: “Be an outlaw, be a hero.” Hélio Oiticica’s 1967 work of a bank robber who committed suicide before the police could ap