Desc: Sinais de Cinza: A Peleja de Olney contra o Dragão da Maldade: Directed by Henrique Dantas. The film of the sheer importance of political cinema Olney Sao Paulo, as well as the absurdity committed by the military dictatorship in life that Caboclo filmmaker who had the idea to change the world from your movie and revolutionary who was murdered by the military dictatorship.