In this article, Nicholas Kristof examines Charles Murray's new book "Coming Apart" which pinpoints the familial breakdown of the white working class and loss of certain values as a cause of the persistent poverty in America.
After I'd read the article the first time, I was confused as to what Kristof was arguing; so in that sense, the argument wasn't developed very well. But upon further inspection, I found some strong rhetorical devices. He uses statistics and cites studies to show how the traditional family has broken down in the working class and how upholding a traditional family helps prevent crime and other outcomes such as drug use. He uses logos to develop an image of how income inequality is self-perpetuating, not just for the white working class but for everyone.