Thanks for adding to my knowledge of Mexican religious history!
Mexico was dominated economically, spiritually and intellectually for centuries by the Catholic church. After the 1910-1917 revolution, strict anti-clerical laws were passed that sparked a 1926-1929 uprising by militant Catholics known as the Cristero War.
-- from the thread Mexican land donation to church draws fire
Well, this article is mainly about an incident from the Spanish Civil War, though Mexico is mentioned.