President Barack Obama speaks on the shootings in Aurora at what was scheduled originally as a campaign event at Harborside Event Center July 20, 2012 in Fort Myers, Florida. "Such violence, such evil, is senseless. But while we will never know fully what causes somebody to take the live of another, we do know what makes life worth living," he told a somber crowd in Florida. (credit: MANDEL NGAN/AFP/GettyImages)
Nation Reacts With Sadness To Shootings In Aurora
Repubican presidential candidate and former Massachusetts Gov. Mitt Romney pauses as he delivers remarks regarding the shooting in Colorado movie theatre July 20, 2012 in Bow, New Hampshire. Romney cancelled campaign events for the day in the wake of a shooting. (Photo by Justin Sullivan/Getty Images)
Nation Reacts With Sadness To Shootings In Aurora
An Obama supporter pays her respects during a moment of silence for the victims of the Aurora shootings as US President Barack Obama spoke on the shootings in Aurora, Colorado at what was scheduled originally as a campaign event at Harborside Event Center July 20, 2012 in Fort Myers, Fla. (credit: MANDEL NGAN/AFP/GettyImages)
Nation Reacts With Sadness To Shootings In Aurora
The flag is lowered to half-mast at the White House in Washington on July 20, 2012 after the shocking shooting at a Colorado movie theater that left at least 12 people dead. (credit: NICHOLAS KAMM/AFP/GettyImages)
Nation Reacts With Sadness To Shootings In Aurora
Obama supporters bow their heads during a moment of silence for the victims of the Aurora shootings called by US President Barack Obama as speaks on the shootings in Aurora at what was scheduled originally as a campaign event at Harborside Event Center July 20, 2012 in Fort Myers, Florida. (credit: MANDEL NGAN/AFP/GettyImages)
Nation Reacts With Sadness To Shootings In Aurora
Repubican presidential candidate and former Massachusetts Gov. Mitt Romney pauses as he delivers remarks regarding the shooting at Colorado movie theatre July 20, 2012, in Bow, New Hampshire. Romney cancelled campaign events for the day in the wake of a shooting. (Photo by Justin Sullivan/Getty Images)
Nation Reacts With Sadness To Shootings In Aurora
A supporter of Republican presidential candidate and former Massachusetts Gov. Mitt Romney pauses to pray for victims of a Colorado shooting before Gov. Romney delivered remarks regarding the shooting July 20, 2012 in Bow, New Hampshire. (Photo by Justin Sullivan/Getty Images)
Nation Reacts With Sadness To Shootings In Aurora
A supporter of Repubican presidential candidate and former Massachusetts Gov. Mitt Romney pauses to pray for victims of a Colorado shooting before Gov. Romney delivered remarks regarding the shooting July 20, 2012 in Bow, New Hampshire. (Photo by Justin Sullivan/Getty Images)
Nation Reacts With Sadness To Shootings In Aurora
Father Christian Tutor of the Rector of the All Saints Anglican Church leads a prayer before Repubican presidential candidate and former Massachusetts Gov. Mitt Romney delivered remarks regarding the shooting at a Colorado movie theatre July 20, 2012 in Bow, New Hampshire. Romney cancelled campaign events for the day in the wake of a shooting. (Photo by Justin Sullivan/Getty Images)
Nation Reacts With Sadness To Shootings In Aurora
President Barack Obama makes his way onto the stage to speak about the shootings in Aurora at what was scheduled originally as a campaign event at Harborside Event Center July 20, 2012 in Fort Myers, Fla. (credit: read MANDEL NGAN/AFP/GettyImages)
Nation Reacts With Sadness To Shootings In Aurora
President Barack Obama makes his way onto the stage to speak about the shootings in Aurora at what was scheduled originally as a campaign event at Harborside Event Center July 20, 2012 in Fort Myers, Fla. (credit: read MANDEL NGAN/AFP/GettyImages)