The movie does not say that Reagan was against sanctions because he was anti-black but that he was against sanctions. This write up I would expect from a liberal with all the distortion a and exaggerations.
I haven't seen the movie and don't intend to, but calling it "dreck" up front suggests that the writer might be looking for things to be offended by -- and might find them in things that others wouldn't.
so did you like it?