So your claim here is-- 1. (Some)Americans call each other names and-- 2. mass media outlets cover stories involving mass murder and that these are the two central drivers of mass violence itself? 
And a further claim you seem to be making is that if "automatic rifles" are banned (although I thought the AR-15 was a semi-automatic weapon) that the media will set up some sort of workshops where they will teach would-be killers how to continue the killing despite this type of weapons ban? 
I can only speak for myself but I do appreciate you providing insight into your distorted view of the situation.