Photo: Ryan Miller/Shutterstock Spoilers follow for Succession season four, episode eight, “America Decides.” If you spent Sunday night in a full-body sweat after Succession reenacted your worst presidential-election memories and fears, you have Justin Kirk to blame. “America Decides” (oh, the bitter irony) is such a successfully ghastly night of television because it shows how the Roys’ interpersonal dramas and power struggles hold real sway over the fate of the world. And in this episode, that fate was ceded to a far-right accelerationist with a racist platform and violent fan base. Kirk played Jeryd Mencken as a sort of charming...