Laura Pollan suffered a heart attack , her daughter died . The Ladies in White , an opposition group , formed after the Cuban government cracked down on dissidents in 2003 . She died at the Calixto Romero Hospital in Havana . The Ladies in White demand the release of political prisoners .
Laura Pollan suffered a heart attack , her daughter died . She died at the Calixto Romero Hospital in Havana . The Ladies in White demand the release of political prisoners .