We are going to read the book The Second Coming of the KKK: The Ku Klux Klan in the 1920s and the American Political Tradition (2017) by Linda Gordon. This book is available in paperback for around $17 and as an ebook for $11. Since this is a relatively short book, we've decided to cover the whole book in one session.
This book was selected as one of the top 20 history books of 2018 by the Amazon book review editor. If they had selected the top History Study Groups, I'm sure we would have come out on top.