The visual techniques of colonialism—and their tenacious legacy in the present—were the focus of the Berlin-based Mexican artist Mariana Castillo Deball’s recent show “Vista de ojos” (View of the Eyes). Three larger-than-life photographs propped against the walls of the main gallery space all bore the title UMRISS (Outline), 2014. Each photograph depicts a mask, either facedown or in reverse, on a brightly colored gradated background. The images were inspired by an international advertising campaign from the 1980s for the antipsychotic drug Stelazine that featured masks from a variety