The Trayvon Martin case has exposed some of the media's worst tendencies--selective editing, rushing to judgment, stoking anger for ratings and page views--and it's taken more than fake photos, the incendiary stumbles of Geraldo Rivera and Spike Lee and verbal clashes between Piers Morgan and Toure to shine a light on them. Here are three recent, troubling examples: 1. After ABC News aired surveillance video of George Zimmerman, Martin's shooter, entering a police precinct without any apparent...