Well, there’s a leftist spin on every story. Usually it is found wanting when hung in the balance.
Your citations are by Jim Tuck, who “founded the only chapter of Americans for Democratic Action outside the U.S., now named in his honor. Adelante (’Forward’ in Spanish) is the chapter’s official publication.”
The ADA is a soft leftist organization. However, “Forward” has been the traditional slogan of Marxists for almost a century.
There’s no dispute whether every action of the Cristeros was saintly. War is a horrible thing regardless of who is involved.
At least you’re honest enough to admit both sides were filthy dirty in that war. The government hung Cristeros from telephone poles for a long distance. Is not the first casualty of war, the truth?