"Three years ago today, a man approached a crowd in the parking lot of a Tucson, Arizona, supermarket and began shooting. Six people were killed, including one child, and 13 were wounded, including his main target, my dear friend, Congresswoman Gabrielle Giffords.
I'll never forget where I was when I first heard the news. I was driving my daughter to her soccer game when I got an email that Gabby had been shot. On that day, the all too familiar tragedy unfolding on TV was personal, one of my closest friends was a victim of intentional violence."
Read the Op-Ed in its entirety here.