Interesting. The diff appears to be (a) they changed the headline from "Facebook Knows It Encourages Division. Top Executives Nixed Solutions." to "Facebook Executives Shut Down Efforts to Make the Site Less Divisive", and (b) they inserted a video most of the way down the article, captioned "In a speech at Georgetown University, Mark Zuckerberg discussed the ways Facebook has tightened controls on who can run political ads while still preserving his commitment to freedom of speech."