The U.S. diplomatic office in Cuba has displayed human rights messages on a large electronic screen on the facade of its sea-front building in Havana.
Monday's display coincided with a U.S. national holiday marking the birthday of slain civil rights leader Martin Luther King Jr.
The messages included portions of King's 1963 "I Have a Dream" speech, in which he calls on Americans to rise up and work together for social change.
The U.S. Interests Section, a part of the Swiss embassy, also displayed passages from the United Nations' Universal Declaration of Human Rights - saying no one shall be subject to arbitrary arrest, detention, or exile.
In 2004, the U.S. office displayed the number 75, in reference to the 75 dissidents Cuba jailed in March 2003.
Cuba retaliated with a series of anti-U.S. billboards, showing pictures of hooded prisoners at Iraq's Abu Ghraib prison.
Some information for this story provided by AP and Reuters.