Members of the Cuban Human Rights group Ladies in White make an "L" (of liberation) with their fingers as they march along the 5th Avenue in Havana, on November 7, 2010. The march demanded Cuban President Raul Castro to complete the liberation of 52 political prisoners, which deadline was today. 13 of them still remain in prison. AFP PHOTO/ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-HUMAN RIGHTS DAY-OPPOSITION-DEMO
A member of the Ladies in White Human Rights organization is arrested by Cuban police on December 10, 2015 in Havana during a demo for the Human Rights Day. AFP PHOTO/ADALBERTO ROQUE / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-HUMAN RIGHTS DAY-OPPOSITION-DEMO
A member of the Ladies in White Human Rights organization lies on the ground as policewomen approach to arrest her on December 10, 2015 in Havana during a demo for the Human Rights Day. AFP PHOTO/ADALBERTO ROQUE / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-US-OBAMA-DISSIDENTS-LADIES IN WHITE-MARCH
Members of the Ladies in White Human Rights organization are arrested during a march on March 20, 2016 in Havana. Dissidents called on the eve of the visit for US President Barack Obama to promote "radical change," notably a "stop to repression and use of physical violence against all political and human rights activists." One banned group, the Ladies in White, said they would attempt to demonstrate after attending Catholic Mass, just hours before Obama was to touch down. AFP PHOTO/ADALBERTO ROQUE / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-US-OBAMA-DISSIDENTS-LADIES IN WHITE-MARCH
A member of the Ladies in White Human Rights organization is arrested during a march on March 20, 2016 in Havana. Dissidents called on the eve of the visit for US President Barack Obama to promote "radical change," notably a "stop to repression and use of physical violence against all political and human rights activists." One banned group, the Ladies in White, said they would attempt to demonstrate after attending Catholic Mass, just hours before Obama was to touch down. AFP PHOTO/ADALBERTO ROQUE / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners, are detained during their protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners, are detained during their protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
CUBA-UNREST-LADIES-IN-WHITE
Members of dissident group "Ladies in White", wives of former political prisoners, are detained during their protest on March 20, 2016 in Havana.
President Barack Obama flew out of the United States on Sunday bound for a historic three-day visit to the communist-ruled island of Cuba. It is the first visit to Cuba by a sitting US president since Fidel Castro's guerrillas overthrew the US-backed government of Fulgencio Batista in 1959 and the first since President Calvin Coolidge's trip to the island 88 years ago. / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)