Shea Serrano talks about his hip-hop book, upcoming TV series and Twitter army of kindness

This week on the SouthBound podcast, writer Shea Serrano talks about his new book, “Hip-Hop (and Other Things),” which is likely to be his fourth straight New York Times bestseller. On Twitter, he has built an army of followers who routinely do good deeds for people in need. And it all stems from a moment when he really needed a second job.