To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/138554" allowfullscreen></iframe> During an appearance on CBS's Face the Nation, liberal documentary filmmaker Ken Burns argued that those who oppose Barack Obama, specifically birthers, were just using a polite version of the "n-word."