Not to nit pick, but you have a right to deadly force not only to protect your life but the lives of others (family members, children, etc) as well as great bodily harm to you and the same. You probably know and accept that but its worth mentioning.

As to the so called "road rage shooter" and the so called "texting in a movie theatre shooter" long before we delve into the constitutional rights issue we at least need to know what actually happened and in both cases we simply don't. The media is pimping us with tasty virtual hashtags that conjure up preconcieved notions and anti gun stereotypes (many of which they harbor deeply themselves) to both promote an agenda and, as always, to sell copy. And the second part of that is working well. For every "hey did you hear about that road rage killing guy" that passes around the gossip machine when we basically have no idea whatsoever what happened yet, modern journalism sinks another inch into the quicksand of irrelevancy.

I don't think you would find very many, let alone any, gun rights supporters who will say that someone has the right to carry a firearm who has committed a deliberate act of extreme and deadly violence against someone when it was not justified. Likewise the entire nation is not going to surrender a right because of the actions of a few, even if they played out as advertised by an extremely biased and activist branch of the media, and quite often they don't anyway.