Jump in gun sales since January 8

"Bloomberg cites Federal Bureau of Investigation data showing that in Arizona, one-day gun sales were 60 percent higher on Monday [Jan. 10] than on the Monday before the incident. Several other states showed a significant sales bump. And national sales increased about 5 percent." Slate

I wonder who they are arming themselves against? Rush Limbaugh, the fuzz ball talker who challenges people to think for themselves? Glenn Beck, who digs up historical facts about progressivism that have been edited out of school books and quotes Martin Luther King and Ghandi? Or, maybe they are afraid of mad men who shoot into crowds killing innocent by-standers and they're thinking if only one person in the crowd to see Giffords had been carrying a gun . . . Ya think?