Since many of us have a broadly Christian philosophy of life whether we like it or not, may I refer you to the "do unto others bit". In particular, the question about what the prevailing view of the immigrants might be should the boot have been on the other foot and Europeans were attempting to migrate en mass to North Africa?
We should ascertain this or consider any available evidence, and do unto them that which they would have done unto us.
This would be fair, surely