People grieve at a memorial for victims behind the theater where a gunman opened fire on moviegoers in Aurora, Colorado July 22, 2012. Residents of a Denver suburb mourned their dead on Sunday from a shooting rampage by a "demonic" gunman who killed 12 people and wounded 58 after opening fire at a cinema showing the new Batman movie. REUTERS/Shannon Stapleton (UNITED STATES - Tags: CRIME LAW)