The conspiracy theory around murdered Democratic National Committee staffer Seth Rich isn’t weird so much as sad: it drags a man’s fairly recent death into the spotlight in order to promote the idea of a “deep state” plot, based on evidence that’s either speculative or factually wrong. But it’s brought together a strange coalition of well-known subscribers — including the internet entrepreneur Kim Dotcom.
Dotcom, founder of defunct cloud storage site Megaupload, isn’t...