Dang, long sleeves? In Phoenix? In August? Wow. Must be a Fed
I think we may be onto a new era of OCing. OCing on TV in these very high profile events will give the sheep a context, something to remember when they see normal people excercising their freedoms daily.
More likely, things like this will result in another assault weapons ban.
Most people are afraid of guns, and carrying an AR clone to a presidential rally will likely cause the sheep to bleat.