I spent four years researching and writing my latest book. When I was writing, I didn't anticipate the racial violence we've recently witnessed in the US. . I sprinkled my first chapter very late in the writing process with some recent stories. Naively I thought we would deal with racism in a real way once the riots had erupted in Baltimore after the death of Freddie Gray.

Clearly we haven't dealt.

Acknowledgement of racism in policing is our first step. Stop the denial. Understanding the rage expressed by those who have felt oppressed is our next step.