Today LatinoJustice PRLDEF honors the Mirabal sisters. The Mirabal Sisters were four Dominican sisters who opposed the dictatorship of Rafael Trujillo, three of whom were assassinated on 25 November 1960.

Patria, Dedé, Minerva and María Teresa all became involved in the political movement against Trujillo, who ruled as dictator from 1930 to 1961. Minerva studied law and became a lawyer, but because she declined Trujillo's romantic advances, she was only allowed to earn a degree, but not have a license to practice law.

They eventually formed a group called the Movement of the Fourteenth of June (named after the date of a massacre Patria witnessed), to oppose the Trujillo regime. They distributed pamphlets about the many people whom Trujillo had killed, and obtained materials for guns and bombs to use when they finally openly revolted. Within the group, the Mirabals called themselves Las Mariposas ("The Butterflies"), after Minerva's underground name.
On 25 November 1960, Patria, Minerva, María Teresa, and their driver, Rufino de la Cruz, were killed on their way home. Since their deaths, the Mirabals have been recognized as national martyrs.

On 17 December 1999, the United Nations General Assembly designated November 25 as the annual date of the International Day for the Elimination of Violence against Women in commemoration of the sisters. The day also marked the beginning of a 16-day period of Activism against Gender Violence. The end of the 16 days, on 10 December, is noted as International Human Rights Day.