Although the reference could be related to “A drug taken illegally for recreational purposes, especially marijuana or heroin,” “smear or cover with varnish or other thick liquid,” “administer drugs to (a racehorse, greyhound, or athlete) in order to inhibit or enhance sporting performance,” or “very good,” (Taken from: https://www.google.com/search?q=Grafiti&oq=Grafiti&aqs=chrome..69i57.565j0j4&sourceid=chrome&ie=UTF-8#q=dope+definition) I chose to see such expressions, less the intelligent remarks of Bansky, as those of a stupid person.
While I say this, I understand the need to help people to understand such futile expressions of self. While they are against the law, perhaps luckily there is no attribution. I do know that these individuals are found and these seemingly Anonymous tags are then associable.
I don’t want to end up posting lonely word plays indicative of disenfranchisement.