In December 2012, 20 children and six adults were killed in a horrific act of gun violence at Sandy Hook Elementary School in Newtown, Connecticut. With at least 250 million guns, the United States has the most well-armed civilian population in the world, and solutions to the nation's epidemic of gun violence continue to be debated. Find out why Oprah's panelists, the Rev. Ed Bacon, Elizabeth Lesser and Mark Nepo, say people are arming themselves instead of facing their own fears head-on. Plus, learn the one thing we can do to start putting an end to violence today.