It's fascinating and a good read, focusing on the case of Sarah Roberts, who was forced to attend an all-Black school in the early 19th century Boston. Her father sued the state for her right to attend a school close to her home and lost. This was the case that Lemuel Shaw (Melville's father in-law) created the concept of "separate but equal" for.
It's an inspirational read with lots to quote from. My favorites are a quote from Emerson and a quote from Robert Morris who was the first Black attorney to win a jury case in the US and the attorney for Sarah.
Morris, who also fought against the Fugitive Slave Law said,
Let us be bold, and they'll have to yield to us. Let us be bold, if any man flies from slavery, and comes among us. When he's reached us, we'll say, he's gone far enough. If any man comes here to New Bedford, and they try to take him away, you telegraph to us in Boston, and we'll come down three hundred strong, and stay with you; and we won't go until he's safe. If he goes back to the south, we'll go with him. And if any man runs away, and comes to Boston, we'll send to you, if necessary, and you may come up to us three hundred strong, if you can -- come men, and women, too.
The Emerson quote is used in the authors' epilogue where they're discussing what has happened since, and how modern schools are just as segregated as they used to be. Eternal vigilance and all that.
You can no more keep out of politics than you can keep out of the frost. And the authors added, "And it is cold out there."