Gun Control: If the girlfriend of the football linebacker killed in a murder-suicide had a gun to defend herself, she might be alive today to explain how guns save lives and more of them means less crime. Let us start with the proposition that Jovan Belcher, the 6-foot-2-inch, 228-pound Kansas City Chiefs linebacker, did not need his legally obtained and registered gun to kill his girlfriend Kasandra Perkins. He could have used his bare hands to dispatch his partner, or even, say, a knife, as was used in another murder case involving a famous football player that NBC Sports announcer...