Parents should assess their own actions for sins and examine their behaviour with children. Beyond that, it is possible that a disobedient child could be a test from Allah – in which case parents should supplicate dua to Allah.
Common folk should respect Ulama of other schools of thoughts eventhough there is a difference of opinion.
Residents of a country have an implicit covenant with the law of the land. Breaking that covenant is akin to breaking a covenant with God.