Mass Grief in a Divided America Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Nelda Mercado of New York grieves as her murdered son, Master Sgt. Pedro Mercado, is buried at Arlington National Cemetery just outside of Washington in Arlington, Va., Thursday, July 22, 2010. ( J. Scott Applewhite / AP Images ) Hosted by Bob Garfield Produced by WNYC Studios