I was just having a crazy thought. Imagine I'm walking down the street, and there are two policemen walking towards me. Suddenly a crazy dude with two guns comes up behind them and shoots them right in the back of their heads, boom, they fall down dead. Is it illegal if I pissed on ONE of their dead faces? What about both of them? If so, which law does it break? Oh wait, public urination I guess, but what else?

What if this takes place in a public bathroom, and the policeman falls with his face in the urinal, so my urine tidily goes into the urinal down his dead face?

Obviously I would never do such a thing, I am just wondering about the law.