Funny thing is, when Jesus was alive there were no portraits done ... add to that the info I learned as an art student, and no one knows what Jesus really looked like. So the question thus becomes who do they keep depicting in images as being Jesus?
Can't remember his name, but there was a priest that thought a certain murderer looked "saintly". It is his face (that murder's face) that most folks are told is Jesus' face.
Somehow, knowing who Jesus' enemies are, you can understand the slander ... even in the churches.