I am curious Smoke.... how does displaying a cross in your car protect you?

Many Christians (arabs included) wear crucifixes on their necks and they are sold in the souq along with Saint medals etc. I think hanging a rosary in your car should be ok, but I dont get why you would want to. If this is a powerful religious symbol wouldnt you want to treat it with a bit more respect? This goes for all symbols of faith, not just Christian (no biase intended).

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"Diplomacy is the art of saying 'Nice doggie' until you can find a rock - Will Rogers"