The discrepancy in the reaction to Dinesh D’Souza’s new film and companion book “Death of a Nation” between establishment media and audiences couldn’t be sharper. The movie-review aggregating site Rotten Tomatoes gives the film, which opened in theaters Friday night, a zero score from critics and 86 percent approval from audiences, while the independent polling group CinemaScore found audiences grade it an A. Most establishment media outlets have ignored the film, but reviews by Variety (D’Souza is “no longer preaching to the choir; he’s preaching to the mentally unsound”) and by a Washington Post reporter typify those who have paid...