yeah, I just added the bit about wholecars. well, I don't believe graffiti is a bigger "problem" now than in the 90s when it spread as a subcultural phenomenon around Europe (just like in the 70s-80s in the US). I remember how I was amazed at how Berlin looked back in the day. Warsaw trains are also 'clean' now. I sincerely believe it's an excuse for some political experiments with drones, than fighting graffiti.