Foundation. Castro tried improving relations with the capitalist nations. He welcomed Western politicians and investors to Cuba, befriended Manuel Fraga and took a particular interest in Margaret Thatcher's policies in the UK, believing that Cuban socialism could learn from her emphasis on low taxation and personal initiative. He ceased support for foreign militants, refrained from praising FARC on a 1994 visit to Colombia and called for a negotiated settlement between the Zapatistas and Mexican government in 1995. Publicly, he presented himself as a moderate on the world stage. In 1991, Havana hosted the Pan American Games, which involved construction of a stadium and accommodation for the athletes; Castro admitted that it was an expensive error, but it was a success for Cuba's government. Crowds regularly shouted "Fidel! Fidel!" in front of foreign journalists, while Cuba became the first Latin American nation to beat the US to the top of the gold-medal table. Support for Castro remained strong, and although there were small anti-government demonstrations, the Cuban opposition rejected the exile community's calls for an armed uprising. In August 1994, Havana witnessed the largest anti-Castro demonstration in Cuban history, as 200 to 300 young men threw stones at police, demanding that they be allowed to emigrate to Miami. A larger pro-Castro crowd confronted them, who were joined by Castro; he informed media that the men were anti-socials misled by the US. The protests dispersed with no recorded injuries. Fearing that dissident groups would invade, the government organized the "War of All the People" defence strategy, planning a widespread guerrilla warfare campaign, and the unemployed were given jobs building a network of bunkers and tunnels across the country. Castro believed in the need for reform if Cuban socialism was to survive in a world now dominated by capitalist free markets. In October 1991, the Fourth Congress of the Cuban Communist Party was held in Santiago, at which a number of important changes to the government were announced. Castro would step down as head of government, to be replaced by the much younger Carlos Lage, although Castro would remain the head of the Communist Party and commander-in-chief of the armed forces. Many older members of government were to be retired and replaced by their younger counterparts. A number of economic changes were proposed, and subsequently put to a national referendum. Free farmers' markets and small-scale private enterprises would be legalized in an attempt