Hector Serda (above) helped put up the altars and the overhanging arch in celebration of Dia de los Muertos, or Day of the Dead. This holiday, in which the deceased are remembered, is observed Nov. 1 and 2 by indigenous peoples of Latin America. Serda, from MECHA, First Nations and Trabajadores de la Raza, stayed overnight watching the altars. The photos below feature various altars, with an emphasis on symbolic items like skeletons and flowers. The festival-style event in the Free Speech Area started yesterday and continues through today.