Francis McCullagh opens the window on Mexico in the 1920s, a nation suffering cruel oppression under the ruthless anticlerical government of President Plutarco Elías Calles and General Álvaro Obregón, indirectly aided and abetted by the government of the USA under President Wilson. In this book, the author reveals the harsh realities of life in Mexico, exposing the iniquitous laws devised and imposed on all things Catholic. He examines the real purpose of these laws, and the main personalities involved, and shows how the resultant uprising of the ordinary people, the Cristero War, led to increased government brutality and the martyrdom of many innocent civilians, particularly priests and young Catholic laymen. Red Mexico is a valuable primary source account of a nation persecuted for its religious faith, written by a man of unquestioned courage and integrity, who was there at the time. We are indebted to Bishop Martín Dávila Gándara for his perceptive and informative foreword, and to María Concepción Márquez Sandoval for her detailed historical appendix.