The above question wants to analyze your writing skill. For this reason, I cannot write the paraphrase for you, but I will show you how to write it.
You can start your paraphrase with the term "according to Washington..." to retain the author's name.
In addition, we cannot forget to present the author's point of view. This point of view is his opinion on the matter at hand.
Reading the text, we can see that from the author's point of view, slavery is harmful to all people, as white individuals are also negatively affected.
More information about paraphrasing at the link:
https://brainly.com/question/25262435