Really factual, straightforward, easy to understand. It covers a variety of topics, provides ample evidence & statistics and specific instances for each claim. I think it’s a very solid entry level reading for understanding the ways police reforms have been attempted and why they have failed and will continue to fail. 
 I think the author was a little too liberal with their conclusion, as they spent the entire book explaining why police reforms will always fail because of the inherent corruption of policing, but then ended by saying reform is possible if the circumstances are right (when they go on to explain they will never be right). It felt like an appeal to liberal readers rather than the author standing firm in a more leftist stance. I think overall the book is very valuable, especially as an entry level book for liberals who are pro police reform, as it does a very clear job of illustrating past reform attempts. I do wish the author ended on a more firm note. 
Hand your local liberal the first chapter at minimum tho and I think they’ll understand things considerably more.