"I'ma kill them all": Accused cop killer's Twitter threats

The week before he allegedly shot and killed St. Louis County Police Officer Blake Snyder, 18-year-old Trenton Forster sent his last tweet:“I’m dying on inside and nobody really gives a [expletive].”Two weeks earlier, he tweeted “I wanna spazz on errrrbody.” A week before that: “I’ma kill em all, just watch.”Earlier in August, Forster, whose Twitter description reads simply “I smoke marijuana,” tweeted about police and guns: “I&rs