The latest U.S. shooting that ended in the deaths of 10 people at an Oregon college last week is reigniting calls for tighter gun laws and prompting comparisons to gun violence in other countries. President Barack Obama asked why Americans can't follow the example of the U.K. and Australia. They crafted laws that "almost eliminate mass shootings," he said. "We know there are ways to prevent it." Adam Lankford, an associate professor at the University of Alabama... (GunPolicy.org)