Once you're over the punch (which hurts his argument more than his target), his points are very good:
American Pravda and the KKK
The embedded stories of Emmett Till and Harry Dexter White are much more ambiguously complex than Unz re-telling. I suppose this is framing to draw in more conservative readers... He's arrived at the same understanding I cover in American Samizdat, 6/11/14, 8/15/16, 8/20/16, 9/21/16, 10/4/16, 10/10/16, 10/18/16, 10/20/16.