SOMERVILLE, Mass. — Raúl Gonzalez was born in El Paso, Texas, and grew up going back and forth between El Paso and Ciudad Juárez, México. Juárez was, for a time, one of the most violent cities in the world. Drug cartel violence killed thousands while hundreds of women were abducted and murdered, or simply disappeared. Few of these crimes were ever solved, and at times the Mexican Army was brought in to Juárez in an effort to restore order. Against this backdrop, Gonzalez has created a series of 101 drawings called Los Nuevos Guerreros (The New Warriors) that explores the inhabitants of Juárez.