From the very beginning Diago has been occupied with identity, which he rendered through themes of social inferences. Thematically the unifying thread in his oeuvre has been his critique to racism in Cuba; something that ‘officially’ doesn’t exist but is present in daily life in the country. His older pieces were distinguished by the use of materials such as discarded wood and metal, as a reference to the living conditions of black people in the country. Although these conditions are not exclusively for black people, they are the ones who historically lived in the poorest neighborhoods, thus often bearing the worst situations. This was the inspiration behind many of Diago’s well-known installations, in which he was compelled to represent scaled down houses made to look like the real ones.