It was for a brief period that the photographer (who happens to be a friend of the family) recorded. I find those photos brilliant in recording non-subjects - they are photos of something that is no longer there.

As the city adapted to the new rules, the frames were torn down, you could see the architecture behind them (sometimes veritable architectural treasures worth of preservation), and murals covered lots of the empty space in monumental art installations. Where the space is empty, you sometimes see art (and political protests) being projected on the walls.