I mean personally I think a picture of a man being tortured on a cross is pretty indecent as compared to what the Mayor likes to look at on his own time.
I mean most Christian's everyday stare at a dead body being tortured. Which is the reality that the sin's of man are to be seen and not hidden. So that we may deal with them. The Criminal justice perspective of freedom of speech is that, men's rea. Everybody who commits a crime wants to tell somebody. However, if the internet becomes so sanitized that we only have pictures of puppies and one specific tortured human's body, the lords. Well then it makes our jobs a lot harder. So by stopping his own indiscretions, because of his own weakness to filter out his own computer. What he has just done is literally destroy 90% of crime fighting. Which is civilian detection and basic confession.
By weakening the flock you have allowed them to be prepared for the wolf. As the shepard can't see the wolf in the flock if it is forced to be cloaked in its mists.