The Gotham Graffiti Mystery

So I decided to stroll through the Gotham streets and noticed, on top of Newspaper vendors selling Gazettes and Planet issues for 1.75, the walls around East End and North-Burnley have unique graffiti.
Obviously the one with the Joker face says "JOKERRULES" and the white demon skull thing in Crime Alley might be Batman, however, I have no idea what RAC, JSO, or WIS stands for.

Perhaps some other players, detectives or lorists have some insights as to what they might mean.

Yeah, I saw those too! I think they add a bit of humor to the game. In the Metropolis quest near University by Brainiac starting quest there is a sign about Hot Dogs. And then there are the Levitz Camera signs as well as other signs. Between the graffiti and the billboard signs, it looks like a normal city!

Im pretty good with batman stuff and the initals mean nothing to me. More likely art dpt devs tagging their work.

The white demon skull could represent the Gotham gang "Street Demonz" but I don't recognize it specifically either

I thought so at first as well, however, due to the tag's location and the appearance of the Street Demonz tag as seen in the No Man's Land being completely different, I figured it would more likely be a street thug's rendition of the Bat.

Perhaps the Devil symbol could be the Cassamento's symbol, when I was working on a compilation of DCUO clips which included clips from the Hunt I noticed that symbol in the background there. Although it's more of a thought though, and your Batman theory makes a bit more sense as the Hunt took place around the time of the early days of Batman.

The first one looks more like it says 'JOKER KILLS'

Alright, I confess. I got a bit bored while hunting for CC Wanteds and used my power ring for some less than legal activities. To be fair, blowing up cars gets old after a while.

Nice finds.

Jinkies. Quite the mystery. One thing though, the same graffiti art can be found in Metropolis as well, especially at the old Metropolis docks. The plot thickens

we should be able to add graffiti to our personal and league halls. Custom and already created graffiti.