Paulina L. Alberto "Black Legend: The Many Lives of Raúl Grigera and the Power of Racial Storytelling in Argentina” Dr. Paulina L. Alberto Professor of African & African American Studies and History, Harvard University. Black Legend is the haunting story of an Afro-Argentine, Raúl Grigera ('el negro Raúl'), who in the early 1900s audaciously fashioned himself into an alluring Black icon of Buenos Aires' bohemian nightlife.