of Twitter , '' Sanchez tweeted to Castro Espin . `` Here no one can shut me up , or deny me permission to travel or block my entry . '' Castro Espin shot back : `` Your focus on tolerance reproduces the old mechanisms of power . To improve your ` services ' you need to study . '' While there is long-running animosity between dissidents and the government , it is not common for the two sides to exchange barbs in such a public forum . A bevy of critical replies to Castro Espin must have followed , for then she wrote on Twitter : `` Despicable parasites : Did you receive the order from your employers to respond in unison and with the same predetermined script ? Be creative . '' In Cuba , where Internet access is limited or prohibitively expensive , many citizens use Twitter as a form of communicating , as Tweets can be posted from a simple text message . Castro Espin is the niece of Fidel Castro . Her father , Raul Castro , assumed presidential duties from Fidel in 2006 , and became president in 2008 . Castro Espin 's organization
-LRB- CNN -RRB- -- Cuban President Raul Castro 's daughter joined Twitter to set the record straight about an interview she did abroad , but ended up arguing with one of the communist island 's prominent dissidents online . Mariela Castro Espin wrote on her Twitter account , @CastroEspinM , that she recently made a trip to Amsterdam , the Netherlands , and toured the city 's infamous red light district in her role as director for Cuba 's National Center for Sexual Education . An interview with Radio Netherlands characterized Castro Espin as `` impressed '' with the way the Dutch organize their prostitution . But on Twitter , Castro Espin said the conversation was taken out of context and that she would use social media to clarify her position . `` Without a doubt , there have been misunderstandings , manipulations , as always . At least there is the Web ... and WikiLeaks , '' she wrote on Twitter . Shortly afterward , Castro Espin was `` welcomed '' to the social networking site by Cuban dissident Yoani Sanchez , an outspoken critic of the Castro regime and avid Twitter user . `` Welcome to the plurality