"This is not about gun control, he said. This is about the criminal justice system being designed to prevent gun violence."

The police superintendent called for mandatory minimum sentences for gun crimes. What he wants most are controls surrounding the "loss, theft or transfer of firearms."

Obama hand-wrote a note to Pendleton's parents, when she died. It was printed on the funeral program and included a promise to take action:

"We know that no words from us can soothe the pain, but rest assured that we are praying for you, and that we will continue to work as hard as we can to end this senseless violence. God Bless, Barack Obama."