A delegation of human rights activists have arrived in Cuba to protest outside the U.S. military prison at Guantanamo. Protesters include Cindy Sheehan and CodePink founder Medea Benjamin, who spoke in Havana.

Medea Benjamin: “We see that there are still close to 400 people in that prison (Guantanamo Bay), and they don’t have access to due process by the law, and we know of all the abuses that have taken place there. We are part of an international group which is asking that the prison be closed.”

The U.S. activists plan to march to the prison along with a former detainee and the mother of a man being held. Thursday marks the fifth anniversary of the opening of Guantanamo. Protests are scheduled around the world to call for the prison’s closing.