Author describes the conditions allowing extremism to flourish

Anyone who consumes daily news probably doesn’t need an expert to tell them that extremism seems to be on the rise.

That said, J.M. Berger has written or co-written two books on the topic — Extremism and ISIS: The State Of Terror — which gives him extra insight into what brought us here and what has helped the hatred to thrive.

Berger and Terry Gross discuss how the New Zealand massacre serves as a chilling example of these trends on Fresh Air; you can listen to their conversation below or read a transcript on NPR’s website.