Young children's gun deaths from 2006-10 are roughly 5 times the child deaths in Newtown

FILE - This Dec. 16, 2012 file photo shows President Barack Obama pausing during a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting, at Newtown High School in Newtown, Conn. The National Rifle Association, the nation’s largest gun lobby, suggested shielding children from gun violence by placing an armed police officer in every school by the time classes resume in January. (AP Photo/ Evan Vucci, File) (The Associated Press)

This undated photo provided by Robert Sullivan shows Veronica Moser-Sullivan, the youngest person slain in the July 20 attack that left 12 dead and dozens wounded during the Aurora theater shootings. The National Rifle Association, the nation’s largest gun lobby, suggested shielding children from gun violence by placing an armed police officer in every school by the time classes resume in January. (AP Photo/Robert Sullivan) (The Associated Press)

Before 20 first-graders were massacred at school by a gunman in Newtown, Conn., 6-year-old Luke Schuster was shot to death in New Town, N.D. Six-year-olds John Devine Jr. and Jayden Thompson were similarly killed in Kentucky and Texas.

Six-year-old Veronica Moser-Sullivan died in a shooting at a movie theater in Aurora, Colo., while 6-year-old Kammia Perry was slain by her father outside her Cleveland home.

Yet there was no gunman on the loose when 3-year-old Julio Segura-McIntosh died in Tacoma, Wash. He accidentally shot himself in the head with a gun he found inside a car.

President Barack Obama has said the nation cannot accept such violent deaths of children as routine. But hundreds of such deaths — whether intentional or accidental — suggest it might already have.