On February 14, 1929, seven members (and associates) of the the North Side Gang were machine-gunned to death in Chicago. It was called the St. Valentine's Day Massacre. The major weapon used was the Thompson Sub-Machine gun. By 1934, Federal gun laws had been passed that made it extremely difficult for civilians to purchase that weapon.

On December 14, 2012, twenty children between the ages of six and seven were shot to death with a Bushmaster XM-15 rifle, an AR-15 clone. Six teachers were also murdered and the shooter committed suicide. Over seven years later, no Federal laws have been passed to limit these weapons.

The obvious conclusion: Gangsters are more important than children.