Bring back the good old days of the European Empires. People doing this sort of thing would be shot back then.
From one of your countrymen:
General Sir Charles Napier (17821853), Commander-in-Chief in India.
A delegation of Hindu locals approached him complaining about the prohibition of Sati the custom of burning widows alive on the funeral pyres of their husbands and his response was:
You say that it is your custom to burn widows. Very well. We also have a custom: when men burn a woman alive, we tie a rope around their necks and we hang them. Build your funeral pyre; beside it, my carpenters will build a gallows. You may follow your custom. And then we will follow ours.