What's worse, Nuisance crime or high impact crime? Do we come down on the fellow who stole a Twix bar for the n-th time or do we lock up the guy who proved that

What's worse, Nuisance crime or high impact crime? Do we come down on the fellow who stole a Twix bar for the n-th time or do we lock up the guy who proved that we really need million-dollar locks and alarms for the library holdings?