So who would be firing these shots? I would suspect that most Republicans are ecstatic that the spending rate of the US government just went down dramatically because of the shut down so I would assume there would be little to no anger coming from Repubs. So who would have a reason to be mad enough to go ballistic and why would they be angry? It seems to me that people are getting out of control. Someone forgot their meds. Maybe we need to get the foot ball stadiums ready for riot detention centers. I better order some more ammo.
Look for more of these incidents going forward. An estimated 6% of adults have serious mental illness and most of these people are NOT hospitalized.......nor will they be. With the internet and todays 24/7 'sensational news' cycle, these same folks are getting all sorts of ideas reinforcing their delusions and paranoia.
40+ years ago, a concerted effort was begun in Europe and the US to get these people out of institutions (more$) and back into the community (less $). We are seeing the result.....and we will see more.