Perhaps drunk men tend to rape women? And somehow in Shiratori's ideal world, women are the most important? Sounds more like some twisted, personal fetish to me really, but anyhow. The policemen didn't exactly get punished for killing his debt chasers neither though, so I guess it's not something directly violating the rules.
The "flow" of the episode certainly felt choppy. I was expecting them to build on the whole Mr Outsider thing from last episode.