Oscar López-Rivera was born in San Sebastian, Puerto Rico on January 6, 1943. At the age of 12, he moved to Chicago with his family.see:http://www.prisonactivist.org/pps+pows/oscar-lopez-rivera.html
Comevacas y Tiznaos: Las Partidas Sediciosas
en San Sebastián,PuertoRico, delPepino en 1898.http://ilustrados.com/publicaciones/EpyuZZpulABKJRJLJl.php

One author Professor F.Pico writes about
These Partidas/Sediciosas, armed groups that terrorized the Puerto Rican countryside in 1898 and 1899. Chiefly active during and after the invasion (July to October 1898), the partidas focused their anger on peninsular Spanish merchants and landowners. The bandits battered or killed their victims, and almost invariably destroyed property… Picó’s thoughtful typology of the partidas sheds light on the tensions that undercut Puerto Rican society at the end of the nineteenth century. The author reconstructs, with the help of U.S. military records, previously unexplored aspects of the invasion.