Well, you cannot base your answer off of what (EVERY) Christian would think, but some of them are forgiving, just as the bible says to do, and they would try to help them. As to where some Christians who do not follow the laws of the bible, they judge and do not forgive. But all in all, criminals do not have the best rep, and most of the time deserve where they are supposed to be. So, most Christians would stay away, but pray for them.
