Michael K. Williams was best known for playing Omar on 'The Wire' and Chalky White on 'Boardwalk Empire.' He died Sept. 6 of a suspected drug overdose. In 2008, Williams told Terry Gross the story behind the scar on his face and his background in dance. In 2016, he reflected on his lucky breaks and what it was like to leave Omar behind. "When 'The Wire' and the character of Omar ended, I had zero tools, personally speaking, in how to deal with letting that go. ... I didn't equip myself with the tools of how to wash that off my psyche." Maureen Corrigan reviews Sally Rooney's new novel, 'Beautiful World, Where Are You.' Also, we hear from U.S. Poet Laureate Joy Harjo. She's the first Native American appointed to the position. She has a new memoir, 'Poet Warrior,' that's in part about her family's history. She's a member of the Muskogee (Creek) Nation.