David Plotz, John Dickerson, and special guest Jamelle Bouie discuss the massacre at Emanuel African Methodist Episcopal Church, the now-official presidential aspirations of both Jeb Bush and Donald Trump, and the increasingly effective campaign of Bernie Sanders. Slate's Political Gabfest is sponsored by Squarespace. Start building your website today at Squarespace.com. Enter offer code GABFEST at checkout to get 10% off. Squarespace—Build it Beautiful. And by SundanceNow Doc Club! The new streaming service for everyone who loves documentaries. Discover unforgettable films like The Queen of Versailles, The Staircase, and The Weather Underground. To get a free 30-day trial go to docclub.com/gabfest. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at www.slate.com/gabfestplus. Twitter: @SlateGabfest Facebook: facebook.com/Gabfest Email: gabfest@slate.com Show notes at slate.com/gabfestLearn more about your ad choices. Visit megaphone.fm/adchoices