“Seja marginal, seja herói”
[“Be an Outlaw, Be a Hero”]
– quote from the famous banner created in 1968 by Hélio Oiticica with an image of Manoel Moreira (nicknamed “Cara de Cavalo” [Horse Face]) after being killed by a paramilitary death squad
Here are links to more information:
http://tropicalia.com.br/en/ruidos-pulsativos/marginalia
http://www.santasombra.com/portfolio/seja-marginal-seja-heroi/