Earlier this month, nearly 100 Portlanders gathered in Jefferson High School's cafeteria to talk about their concern over gang violence in Portland. Those concerns are not without foundation - 2011 has seen a rise in gang violence that includes a 14-year-old shot in the head near the Lloyd Center mall, the shooting of six teens in North Portland after a football game and the death of 13-year-old Julio Cesar Marquez, the city's youngest gang-related homicide.