"On Second Thought" is celebrating its third anniversary this week. The show launched its first broadcast on GPB on October 20, 2014. To celebrate three amazing years, we’re re-airing our best segments in a two part broadcast. Here are the best picks for today: The violence in Charlottesville, Virginia this summer renewed conversations about race relations, and have left some searching for answers on how to de-radicalize people. That’s something Shannon Martinez of Athens knows first-hand. She