I don't know if the guy in the middle, with the two kids, is supposed to be someone creepy (who may have done creepy things to kids?) or just a regular person who uses the same phrase but I think the comic would work even better in the latter case.
Not everyone who says that they are doing god's work does horrible things, not everyone who does horrible things claims that they are doing it for their god, but there is enough overlap on this subject that it is notable.