Guess he’s solved that murdering on the public way.
I suspect is is the “broken windows” model that Giuliani and Bratton used in the nineties to bring down the crime rate in New York. Idea being (I think — it’s been about fifteen years since criminology class) that those who commit “minor offenses” are more likely to commit major ones. I believe there was some thought also that these could be used as leverage to get them to talk about other no-goodnik friends of theirs, and that if the police can’t find your neighbor when they come to serve him with a warrant, you might get irritated seeing them three or four times ina day and mention where he could be found.