One more time: A guy - an unstable veteran who drank alot, suffered from anger management and other mental issues, and "had a gun at all times" - killed at least 12 people at a D.C. Navy yard. There have been so many mass shootings in this country, and this country alone, its definition is debated. Counting sprees that kill four or more people, the FBI lists six mass shootings in the past nine months and 20 during Obama's presidency. The folks at Guns Are Cool reasonably include wounded,...