Comic book fans have too much power and influence on pop culture’s ebbs and flows, so watching “Utopia,” a show where a granular-level obsession with comics turns into jaw-dropping dismay, feels practically cathartic. Imagine that your favorite comic book is actually a colorful document of someone’s real, if wholly unbelievable, life, and every adventure and every panel is actually a vibrant snapshot of actual violence. Imagine that you find all of this out the hard way at a comic convention as two assassins go room to room murdering every poor dork who’s laid eyes on the rare, unpublished sequel to a popular comic seen by conspiracy theorists as a predictive text for every contemporary plague that’s struck mankind.