WANTED BY THE LAW?
River Christian Fellowship
As far as I can tell, there's no pun or joke or deeper meaning here--it would be kind of groovy, at least insofar as Flavia knows groovy, if it were intended as some sort of Pilgrim's Progress-y, "yes! you are convicted under the law [of Moses]! but you are redeemed by Christ!"
As it is, I'm left thinking it's just a stupid and/or desperate attempt to drum up church membership. And maybe not the best way to welcome visitors to a depressed, post-industrial city with a non-negligable crime rate.