Old Town Alexandria's Abby Spangler didn't set out to start a national movement for tighter gun controls. But she took note when two students shot their classmates at Columbine High School in Colorado. She watched moms keep their kids inside when the D.C. snipers terrorized the Washington region. Then five Amish girls were shot in their Pennsylvania schoolhouse. Finally, on the morning of April 16, 2007, when Seung Hui Cho opened fire at Virginia Tech, killing 32... (GunPolicy.org)