Rothschild’s compelling, comprehensive, meticulously-documented reporting provides ample context. He occasionally slips into a wry tone when describing some farcical episode or badly misspelled manifesto, but things turn dark as he lists the acts of violence perpetuated by QAnon believers: death threats, kidnapping, even murder. He also exposes the reluctance of social-media platforms and e-marketers to shut down QAnon’s incendiary messaging..