Going Dark is the result of Julia Ebner's "personal research" into how extremists use social media, online forums, trolling and hacking in order to radicalise individuals.
Six parts deal with different stages in the radicalisation process: recruitment, socialisation, communication, networking, mobilisation, and attack. A final section looks at potential developments over the next five years and then suggests action we might take in 2020.
There's too much of interest in the book to review everything, so here are just a couple of things that stuck in my mind.
First, the danger of engaging with some of the extremists even as a researcher. The author found herself being drawn into the Trad Wives forum "having just come out of a painful break-up". She says that "neither class, gender or race, nor political or religious views, determine if someone will be groomed by extremists. Everyone can be exploitable in moments of weakness, and vulnerability can be a highly temporary concept". Only education, "knowing the steps and signs of radicalisation" saved her.
Second, how the concept of 'free speech' has been hijacked for the purposes of justifying extremist views. Mainstream audiences on popular platforms "are targeted with messages around issues of identity, heritage and free speech". The ideas are taken up in chat groups that claim they are "safe spaces for freedom of speech". In the offline world, we have arrived at a situation where some of the Charlottesville rally participants "try to convince the organisers to reframe the rally around freedom of speech instead of white identity".
There are plenty of other light-bulb moments: how the algorithms of YouTube always draw you to more extremist content, how far-right organizations will dissuade supporters who are obese, disfigured or not trendy enough, and how the Christchurch attack "blurred the lines between trolling and terrorism".
Ebner says her "aim in this book is to make the social dimension of digital extremist movements visible". She achieves this with a well written variety of examples. If your only interaction with online communities is via Facebook, Twitter, Instagram or YouTube, by the end of the book, you'll be aware of just what a tiny corner these cover.