A few of the recent pieces I've liked:
Ta-Nehisi Coates at The Atlantic: Barack Obama, Ferguson, and the Evidence of Things Unsaid
Danielle Paquette in The Washington Post: An Obamacare program helped poor kids and saved money. It was also doomed to fail.
Richard Florida at CityLab: This Holiday Season, Let's Turn Retail Jobs Into Middle-Class Ones
Gabrielle Glaser at ProPublica: Twelve Steps to Danger: How Alcoholics Anonymous Can Be a Playground for Violence-Prone Members
Emily Eakin in The New Yorker: The Excrement Experiment: Treating disease with fecal transplants