I generally have some tolerance for people pissing in the street. Public toilets are few and far between, the people who don't live in Helsinki don't necessarily know where they are, restaurants and bars don't always let people in just to piss and often have lines, etc.
That said, people should at least have the decency to find a pissing place which is at least a little bit out of the way of other people. More specifically, I don't understand why so many people insist on pissing on apartment buildings' gates, which are right in the way of people going into and out of the building. Especially when there are perfectly good trees and fences around.
The other day, however, some asshole outdid him/herself by shitting right in front of our gate. A huge turd, too, and right in front of the door that people use to get into the building. If it were much smaller I'd probably blame it on some careless dog owner, but if that thing came out of a dog then we must be dealing with the Hound of the Baskervilles.