Unless these fools are using next level counter-surveillance methods as they make their cross border raids, they can be caught, brought to trial and sent to jail. When the evidence is a trail of CCTV, GPS, social media and other electronic breadcrumbs, it's for the fool to prove he was somewhere else. And because he's a fool, such proof does not exist, and anything but the truth only adds to your sentence. And "no comment" in the face of this kind of evidence is always taken as proof of guilt by a judge or jury.
If people really don't understand how easy it is to catch someone who doesn't want to be caught (but doesn't have the skills not to get caught), especially someone moving around the urban environment and using public transport, I suggest you watch a few episodes of Channel Four's Hunted. And for understandable reasons, even they aren't telling you what's really possibie.
TV drama has been lying to us all for years - even if you stick to cash purchases, cover your face at all times, move only at night, use a burner phone, destroy your SIM card after each use, and use throwaway accounts on the internet, caching you is still as easy as catching anyone else who thinks they're smarter than the state.
This isn't rocket science. It's been this way since the dawn of time. The Brighton Bomber was caught because he was placed between a rock and a hard place even under the primitive law enforcement techniques of the 1980s - finger printing and witness identification. Catching a tagger in 2024 is child's play. Especially if they're under the impression they can't be caught, rather than the reality - it's just cheaper to paint over their doodles.
The impetus to do so is in the hands of the Mayor, nobody else.