Bayardo Arce. Awarding the title of Citizen of Rio de Janeiro City to Bayardo Arce, commander of the Sandinista National Liberation Front of Nicaragua. In the photo,  Apolônio  de Carvalho (esq.) and Bayardo Arce. The Congress brought together 77 participants from 50 countries, under the chairmanship of former West German Chancellor Willy Brandt.