There’s a lot of stencil art faces on the streets at the moment. Are these portraits of real people? What do they signify? To me, these faces are a signature and a reminder that the city is full of anonymous people that we will never know.
These images are infinitely superior to tags, which I think have no artistic value and are simply vandalism, not least because their creators place them anywhere regardless of the suitability of the location.
In contrast, many stencil artists to not attack every wall and limit their placement to walls that seem to be widely used as canvases. They do not target newly painted walls that are bare.