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.
Who the heck writes this claptrap?
People who know exactly how to package lies and distortions to foster divisions among Christians.
Given the fact that the majority of Christians in this country have been fed leftist urban legends and revisionist history rather than the truth since they were in kindergarten, it's easy for them to do. Particularly now that dupes as well as useful idiots help them spread their propaganda.
The democrat fascist nobility mastered the art of successfully dividing Christians against one another several generations ago. As masters of propaganda and fifth column activity they've managed to neutralize Christians as opponents to their anti-Christ agenda by keeping them busy fighting one another.
It began with the democrat party promising to save people in some States from the Irish and other Catholic immigrants with eugenics and "progressive" government policies. At the same time, they were promising the Irish and other Catholic immigrants in other States they would implement "progressive" government policies to protect them from the anti-Catholic sentiment being spread by the KKK and other groups who preached birth control and eugenics.
Unfortunately, even though most Christians no longer trust the media, they never question their own acceptance of lies that instantly start them drooling and barking as soon as any media outlet rings the Christian vs. Christian bell.