Psychopathy is a case of more harmful 'possession' although more subtle (at least compared to the pictures). That is my present thinking anyway. In the pictures a lot of them are just taking what a lot of people - identify with specific memes of fashion, and taking it to a disrespectful extreme. That's been going on for a while, but with the sorts in these pictures becomes more obvious.
It seems like some people, who reject society by identifying with a disrespectful aspect of that society, either have little grasp of moderation and differentiation, or are somewhat undeveloped in terms of an inner milieu. And in rejecting to this degree, it becomes easier and easier for them to automatically associate common notions of respect and being respectable, with everything they might deem "bad" about the people around them. Like a child who cannot integrate the good aspects of its parent with the bad, which is always a difficult process, but in this case applied to society as a whole and taken to an uncomfortable extreme.
That is to say if there is thinking involved, then it is black-and-white thinking. Beyond that, if making others uncomfortable without purpose (absent exposure of a truth) is what their goal is (like some of 'modern art'), if it is what they strive to do and to be, then they are not presently capable of understanding the use of common societal morals (which would be to help people align with the right way to act). Without such rules in society, the right thing might be slightly harder to realize, because conscience requires training and growth. And furthermore they exist to help relate to other people, in ways all parties can understand.
Thus if I, for instance, were to obsess over/identify with one of these "artistic" (speaking highly subjectively) modes of expression, it would be easier to forget about the ideal ways to act, because I would have an incorrect idea about how I am making other people feel, and because I am acting in a way that does not make sense to others.
I'm not sure if what I say makes sense at all. My opinion could probably be subject to a lot of revision.