Earlier today, a gunman walked into a movie theater in Aurora, Colorado, where people were watching the midnight showing of the new Batman movie. He fired gas canisters into the crowd, and then opened fire. At least 12 people are dead and 59 people are injured. My heart and prayers go out to all of them.

On the day Gabby Giffords was shot, I was picking up my son Henry from a lesson when I got the text message saying there had been a shooting. I’d campaigned with Gabby in 2006. Henry didn’t understand why I’d stopped getting into the car and started crying.