In keeping with the post below:
There is a constitutional right not to be murdered by a state officer, for the state violates the Fourteenth Amendment when its officer, acting under color of state law, deprives a person of life without due process of law. Brazier v. Cherry, 293 F.2d 401, 404-05 (5th Cir. 1961). But there is no constitutional right to be protected by the state against being murdered by criminals or madmen. It is monstrous if the state fails to protect its residents against such predators but it does not violate the due process clause of the Fourteenth Amendment or, we suppose, any other provision of the Constitution. The Constitution is a charter of negative liberties; it tells the state to let people alone
Found initially at Another Gun Blog, where Mike W. has some important things to say on the topic.