Candles, flowers and stuffed animals line a table during a vigil in Santa Fe, Texas for the victims of the mass shooting on May 18, 2018. - Ten people, mostly students, were killed when a teenage classmate armed with a shotgun and a revolver opened fire in a Texas high school May 18, 2018, the latest deadly school shooting to hit the United States. The gunman, arrested on murder charges, was identified as Dimitrios Pagourtzis, a 17-year-old junior at Santa Fe High School. He is being held on capital murder charges, meaning he could face the death penalty. (Photo by Daniel KRAMER / AFP)        (Photo credit should read DANIEL KRAMER/AFP/Getty Images)