Emily Bazelon, David Plotz, and John Dickerson are joined by Ta-Nahisi Coates to discuss the situation in Baltimore following the death of a black man while in police custody. They also talk about recent Supreme Court arguments over marriage equality and the death penalty and debate the week in Democratic campaign politics.     The Slate Political Gabfest is sponsored by Stamps.com. Buy and print official U.S. postage using your own computer and printer, and save up to 80% compared to a postage meter. Sign up for a no-risk trial and a $110 bonus offer when you visit Stamps.com and use the promo code GABFEST.     And by the University of California, committed to advancing our world through discovery. Learn more at universityofcalifornia.edu. The University of California—the power of public.     And by Casper, an online retailer of premium mattresses for a fraction of the price. Casper mattresses come with free delivery and returns within a 100-day period. And get 50 dollars toward any mattress purchase by visiting casper.com/gabfest and using the promo code POLITICAL.     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/gabfest Learn more about your ad choices. Visit megaphone.fm/adchoices