What is the author's style in Soul on Ice by Eldridge Cleaver?

The book is written from the first person perspective of Eldridge Cleaver, an inmate in Folsom Prison in 1965 when the civil rights movement and Vietnam Conflict were major American issues. With one exception - a single letter from Cleaver's attorney - the entire work is from Cleaver's own hand. The author talks extensively of events and people important to the civil rights movement of the mid to late 1960s. While it's an incredibly effective tool, younger readers - who did not live during that era - may miss some of the finer points of the writing.