What is the author's tone in When and Where I Enter: The Impact of Black Women on Race and Sex in America by Paula Giddings?

The story is written in a fairly straightforward manner but is sometimes presented in a convoluted manner that makes it difficult to follow the details of the idea being presented. The book is set in America during the years following the Civil War until the 1970s. The passage of time means that there are some basic differences in how the people talk and address members of the racial groups. The words "Black," "White," "Negro" and "Colored" are used throughout the book.