The so-called Cans Festival (pun intended), Waterloo, London, UK. Celebration of Banksy in particular, graffiti in general. This guy isn't Banksy himself.
In the sub-plot, a Microsoft employee was sent to "mingle" and create an acceptable corporate icon without being spotted and driven from the scene. He does OK.
The fixed (hand-held) camera paid benefits, as the action unfolded . . .
The music is by Tarwater.