 Calles, however, did not abide by the terms of the truce – in violation of its terms, he had approximately 500 Cristero leaders and 5,000 other Cristeros shot, frequently in their homes in front of their spouses and children.Particularly offensive to Catholics after the supposed truce was Calles' insistence on a complete state monopoly on education, suppressing all Catholic education and introducing "socialist" education in its place