Gigantinho Gymnasium. Conference ‘Rights and Diversity’. Left to right: Paulo Jorge Vieira (Portugal), Blanca Chancoso (Ecuador), Njoki Njoroge Njehu (Kenya), Paul Hoffman (USA), Boaventura de Sousa Santos (Portugal). The III World Social Forum, held in Porto Alegre between 23 and 28 January 2003, brought together over 100,000 people from 156 countries.