Pool Vandals

I too have jumped into pools at late hours of the night, so I didn't think much of the kids who, at 2 a.m. last night, were having a little pool party at my apartment complex. I assumed they were a bit inebriated since they were jumping into the pool and it was a cold night but, meh, ...been there done that myself.
Yet this morning when I opened my blinds I found a grotesque spectacle (my balcony looks over the pool). Every lawn chair, table, flower pot and trash can in the pool area had been thrown inside the pool and was half submerged, the dirt of the flower pots making murky trails in the water... those little bastards.
It pisses me off even more to think that every "splash" I heard last night was not a drunk kid falling in the water but a chair or a trash can been thrown in by them.
So I did the neighborly thing, I went door to door to every apartment surrounding the pool area and left a letter expressing my dismay and encouraging my neighbors not to be intimidated by the little pricks and inviting them to report to the apartment's management office if they know whoever did this.
I guess I'm old. But you should see the pool. The chairs would have been one thing, but the trash cans? And the flower pots? The pool had just been cleaned and treated a week ago, so it will probably be a while before we can use it again. And it just looks gross with all that stuff floating there. Damn pool vandals.