I was obligated to read this book as part of my U.S. history class, and I made an account just to let it be known how horrible the book is. The sections are organized in a poor manner, jumping about chronologically randomly, the writing style is in-comprehensive, non-scholarly, filled with euphemisms, obscure terminology, and references to things the reader has no way of knowing. The contents of the book itself skim over or skip many important events, but hyperfixate on others.
I am not exaggerating when I say every other page makes a reference, usually extensively, to some injustice towards or inequality against minorities. What I am saying that it is the focus of the narration to the point that re-titling the book as "U.S: A History of Inequality" would not at all be inappropriate.
Summary: the content, writing style, and historical coverage are poor, the emphasis is social justice.