Terrazo tells the stories of abuse, racism and suffering of many Puerto Rican Blacks during the 19th century at the hands of Puerto Rico's vast White majority. It's 20 chapters, while presumably made up of fictional stories, talk about the way many Black workers used to be treated by many White slave owners.
The book has been considered by many as one of the tools that helped Puerto Rican people realize that there was some racism in Puerto Rico's past.