 The liberationists built upon the BEC movement, giving it a more explicitly social edge.Peruvian theologian Gustavo Gutiérrez, who coined the term “liberation theology”, once said that ninety percent of the movement is the preferential option for the poor.The Latin American bishops, following up on their 1968 statement at Medellin which called for an “effective preference to the needy and poorest sectors” of society, issued in 1979 at Puebla a document entitled “A Preferential Option for the Poor”.