The Buenos Aires Herald drew my attention to research being undertaken by anthropologist Pablo Cirio of the university of La Plata on the Afro-Argentine disappeared. Little attention has so far been given to this small group - certainly I've never seen anything on desaparecidos of African descent in Argentina - but Cirio has apparently already uncovered ten cases. Cirio argues that the disappearances should be seen in the context of the "historic disappearance" of the community, first from Africa and then from the official history of Argentina. He points to, for example, remarks by dictatorship-era interior minister Albano Harguindeguy about Argentina being "one of the three whitest countries in the world". The research is at an early stage, but sounds promising.
The forgotten Afro-Argentine disappeared (Buenos Aires Herald)
Estudian casos de afroargentinos víctimas de la última dictadura como parte de su "desaparición histórica" (Telam)