When it's all about Graffiti, the line between a piece of graffiti being Art or an Act of Vandalism is fine.
That line is distinguishable, though.
It's a simple difference. If the owner of the wall invites the artist to paint on that, it's not a vandalism, right? ;)
However, it appears it could be both, as I guess nobody considers Banksy's works as vandalism. That's just because of fame and money, I guess. Anyway.
Here is this piece that has that side of vandalism, as I found it on the walls of big residential buildings in Varna, Bulgaria and I am 100% sure the people living there haven't been asked for permission.
Link to full post: https://ecency.com/hive-184784/@lightcaptured/art-or-act-of-vandalism