Crime Alley Diorama Custom Diorama / Playset

I got a Tomb Raider motorcycle diorama for a decent price and thought it might make a good Crime Alley. So, I dirtied the whole thing up with some drybrushing, spray-painted the "graffiti", printed out several things to paste on the walls, stuck bits of plastic bag/newspaper on the floor and made psuedo-barb wire with twisty ties. I also made some six-inch scale roses and a black paper box to put them in. Each one of the posters has some significance, and so does the graffiti. Bonus points if you can tell me where the "missing" poster at the bottom is from (don't worry, it's not a real-life missing person notice)!

The roses are made of toothpicks and epoxy putty. The box was made from pieces cut out of plastic blister packaging, taped together, covered in newspaper and painted. Now Bruce and Alfred can pay their respects.