Between the 1960s and 1990s, more than fifty designers worked at OSPAAAL (the Organisation of Solidarity with the People of Africa, Asia and Latin America). Based in Cuba, they made magazines and posters that were sent around the world. Their aim was to promote radical political ideas. Many of their posters celebrate socialist revolutions and liberation movements from the Global South. They also criticised the foreign policy of the U.S.A. and supported the Black Power movement.

Alfredo Rostgaard’s poster was inspired by the Black Panther Party logo. Some copies had a message printed on the back: “On the occasion of Dr. Martin Luther King’s assassination, we have published a poster that is now being circulated all over the world. We are sending you herewith a certain amount of these posters, which may be used in your country for the activities to be carried out in this regard.”