Anti Castro-blogger launches campaign for help to leave Cuba But Miss Sanchez believes that this, like all previous attempts at foreign travel, will be denied. "I have done everything that is within my reach but the wall of control, the wall of censorship, the wall which stops me travelling freely and returning to my island seems not to move," said Miss SÃ¡nchez in the appeal. Her supporters are collecting signatures for an online petition calling for Mrs Rousseff to intervene. In the video clip Miss Sanchez refers to the time Mrs Rousseff was imprisoned during Brazil' military dictatorship. I know very well that she has felt first hand... what excessive control and repression is. She also referred to the failure of Cuban authorities to relax strict travel rules, which means Cubans are forced to seek exit permits to leave the country. It was hoped that Raúl Castro, who took over as President from his ailing elder brother Fidel in 2008, might introduce such changes, but they have not been forthcoming. Miss Sanchez, who writes her regular blogs from internet cafés across Havana because private internet use is restricted has received recognition across the world for her pioneering struggle for freedom of speech on the island. Hers was named best blog by Time magazine in 2008 and she has received prizes in Spain, Germany and the USA.