Up until the moment on Thursday he allegedly murdered five Capital Gazette employees, Jarrod W. Ramos was in many ways a kind of media consumer known to every journalist in America. He hated the newspaper, and he set up a pseudonymous account on Twitter to say so, again and again. There, the surly nonsense he directed at the newspaper’s reporters sat alongside the ominous allusions to the Charlie Hebdo massacre, all of it adding up — to what, exactly? A troll campaign? An actual threat? How could anyone tell the difference, anyway?