It all started with my noticing of these stickers absolutely everywhere all over London. I’d also seen them in other European cities. I was never curious enough to actually search for it, so I just noticed and moved on. The method by which I discovered their true meaning was something I never expected. The sticker in question Every now and then I’d come across one and the question would briefly pop back into my head, but it’s surprising how high the barrier to looking something up is for me.