How to treat monks who break the precepts?

Monks keep precepts, break precepts, break precepts. It's really a Buddhist monk group. As for the inner things, monks can't mention them casually, let alone scold them at home. As long as it does not violate national laws, family members have no right to ask. The Buddha said in the Buddhist scriptures that when a family member says that a monk has done evil and committed a serious crime, it is breaking the precepts and doing evil to a monk, and all believers should guard and respectfully provide for him.