Plínio Soares de Arruda Sampaio ( July 26 , 1930 -- July 8 , 2014 ) was a Brazilian intellectual and political activist , who was affiliated with the Partido Socialismo e Liberdade ( PSOL ) .
Plínio Soares de Arruda Sampaio ( July 26 , 1930 -- July 8 , 2014 ) was a Brazilian intellectual and political activist . He was with the Partido Socialismo e Liberdade ( PSOL ) .