Castro and Malcolm X in Harlem, 1960
Castro at UN 1960
This won’t be a surprise to you...
http://www.freerepublic.com/focus/news/2184723/posts?page=121#121
Black Panthers
In the ‘60s and ‘70s, Cuba openly supported the black nationalist and Marxist-oriented Black Panther Party of the U.S. Many members found their way into Cuba for political asylum, where Cuba welcomed them after they had been convicted of crimes in the U.S.
http://en.wikipedia.org/wiki/Foreign_relations_of_Cuba#Black_Panthers