From left, Tom Sullivan, father of Aurora shooting victim Alex; Jane Dougherty, sister of Sandy Hook elementary school shooting victim Mary Sherlach; Carlee Soto, sister of Sandy Hook e

 

              From left, Tom Sullivan, father of Aurora shooting victim Alex; Jane Dougherty, sister of Sandy Hook elementary school shooting victim Mary Sherlach; Carlee Soto, sister of Sandy Hook e
From left, Tom Sullivan, father of Aurora shooting victim Alex; Jane Dougherty, sister of Sandy Hook elementary school shooting victim Mary Sherlach; Carlee Soto, sister of Sandy Hook elementary school shooting victim Victoria; and Coni Sanders, daughter of Columbine High School shooting victim Dave Sanders, stand together during an event to honor those killed in the massacre at an Aurora, Colo. movie theater a year after the attack on Friday, July 19, 2013, in Arapahoe County, Colo. The vigil participants read a list of names of those killed in gun violence across the nation since the elementary school shooting rampage in Newtown, Conn., in December. (AP Photo/The Denver Post, Hyoung Chang)