In 1971 Duvalier died, and he was succeeded by his son Jean-Claude Duvalier, nicknamed 'Baby Doc', who ruled until 1986. He largely continued his father's policies, though curbed some of the worst excesses in order to court international respectability. Tourism, which had nosedived in Papa Doc's time, again became a growing industry. However as the economy continued to decline Baby Doc's grip on power began to weaken. Haiti's pig population was slaughtered following an outbreak of swine fever in the late 1970s, causing hardship to rural communities who used them as an investment. The opposition became more vocal, bolstered by a visit to the country by Pope John Paul II in 1983, who publicly lambasted the president. Demonstrations occurred in Gonaïves in 1985 which then spread across the country; under pressure from the United States, Duvalier left the country for France in February 1986.