Something I pass on a regular basis. I admit I didn't pay it much mind as it's a wall and it's not my focus of attention, just an alley between A to B. From parking lot to post office out to the main road. Until one day, when the wall took on a whole real, full frontal assault of my attentions and made its true presence known.
You can see that at some time, rather than remove the gum, someone just painted over all the gum. That did nothing to deter the gum stickers.
I'm most concerned by the ones proclaiming love. In chewed gum. Applied on an alley wall.