I read this book with a book club a few years ago, soon after it was released, so I don't remember it all that well, but I thought it was a fairly evenhanded account of the history of the breed and how its reputation went from "nanny dog" to "vicious killer", and I enjoyed reading it. I'd recommend it for anyone who wants to learn more about them.
https://en.wikipedia.org/wiki/Pit_Bu..._American_Icon
Author Bronwen Dickey
Apparently both pit bull advocates and and those against the breeds complained about the book, which IMO is a good sign that it was mostly fair.
The thing that stuck with me the most was the interview with a woman who rescued pit bulls and made the usual claims that they were only bad if trained that way, etc., but gave all her dogs scary names. I can't remember the exact names right now, but imagine her having a pit bull sanctuary where all the "harmless" dogs have names like "Killer", "Demon", "Lucifer" or "Ripper". These sorts of people want their dogs not to be viewed as monsters, but they deliberately give them names like this. It cemented my belief that most people who have pit bulls do so at least partially because they like the idea of owning something that will scare others.