Bond,
What happens when these kinds of people get removed back home? Sent to a desert hideaway never to resurface again?! They're never allowed back home without your security services giving them a good grilling on return. Personally I think the desert would be a good option. Repatriating nutters only to set them free would defeat the purpose and just move the problem. Nothing like a bit of incommunicado detention to sort these people out right?