The "fascination" (I prefer the term interest) lies not in the fact that this crime occurred but that it was preventable. Anyone seriously examine this clown's history should have been able to predict what was likely to (and in fact did) happen.
You are way overblowing the intent here - it is basically a way to look at a trend (albeit a disturbing one) that is occurring, There have been several reports of women being punched in the face by total strangers for no apparent reason.
This is 'everything else" and in a thread devoted to crime and punishment. I don't where else it should go - unless you want to play nohearum (a relative of the infamous noseeum bug). Although sweeping these things under the rug will likely come back to bite someone.