Shame is also a form of social control. Be ashamed you don't know your place, lower class person. Lack of required shame used to be called being "uppity".
I'll tell that to the dude who pees in my staircase every other week, I must be just confused and too rich to understand.
If they couldn't identity the person they would setup cameras or a passage system to identity who uses the staircase until the problem can be solved. The law here allows apartment owners to setup cameras in the case of resolving problems with property and shared spaces. For example, in my building there are cameras in the garage and the garbage room, and entry require tags that get recorded when opening the door. Those intrusive actions where done to address past theft and misbehavior which in turn cost money to the company who own the building.