By Tavis Smiley for Huffington Post.

Join me tonight on PBS for my conversation with award-winning filmmaker Robert Greenwald. He has exec-produced and/or directed more than 50 TV movies, miniseries and feature films. Through his company, Brave New Films, he also makes political video shorts and full-length documentaries -- substantive investigations of social issues, told through personal stories, and creatively distributed through such outlets as the Internet and social media. His latest film, Unmanned: America's Drone Wars, investigates the impact of drone strikes both here and abroad.

In the clip above, Greenwald shares his thoughts about President Obama's "kill list" and why he is getting a pass on drone strikes.