In John Lennon Park in Havana, Cubans eagerly study the inscription from the song "Imagine" at the foot of his statue: "You may say I'm a dreamer,/ But I'm not the only one." Lennon has become a cultural icon in this city of dreams. But for some Cubans, the socialist dream has turned sour over four decades of a US-imposed trade embargo and Fidel Castro's grip on power. Nobody had [...]