Havana – These days Fidel Castro doesn’t often leave his comfortable home in Siboney, a leafy suburb west of this city. But on April 18, the 89-year-old Cuban leader emerged, aides at his side, wearing a royal blue Adidas sports jacket over a blue plaid shirt, and was driven two miles to the immense Palacio de Convenciones. Inside he was greeted by a thousand members of the Communist Party, the ruling body that has been Cuba’s sole political party for half a century. They were wrapping up their four-day conference, generally held twice a decade. See more at … Backlash in Cuba