My town used to be a recently decent backwater with drug problems but not a lot of crime.
Then came a Banksy on the old prison walls and lockdown and every single wall and fence in our town is now graffiti ridden.
Apparently there is a difference between taggers and stencillers.
But the well documented problem with this isbthat it results in rivalries, often violent ones, based on affiliations or gangs.
Stabbings are now weekly affairs in my town. The police are never present, having moved to a block several miles from the town centre.
So, a blank wall, an empty fence, or the excretions of a youth without consequences.
I prefer the possibilities of a blank canvas. so, Banksy need to be jailed for vandalism.