The matter was first reported by The Bad Bunzlauer:

Sometimes I think it would be nice to have an app on my phone that could take a photo or video and, after analyzing it, show what lofty thought was in the mind of the person who committed a given act. For example, you could take a photo of such writing on a bus stop and it would display a cabbage leaf, a donkey’s backside, a fish tail, a turd—or nothing would appear. Emptiness.
Wulgarny napis na przystankuWulgarny napis na przystanku • Photo author: facebook.com/bunzlauer (Norbert)

We regularly report in our pages that there is no shortage of vandals here. Examples from this year alone:

Let us recall: this type of vandalism may carry a penalty of between three months and as many as five years in prison.