So what's the mindset called where any behaviour, no matter how egoistical and anti-social, is excused and blamed on something else (often a government entity i

So what's the mindset called where any behaviour, no matter how egoistical and anti-social, is excused and blamed on something else (often a government entity is implied)? And when can we drop that? I'm not saying that being jobless in this economy and being politically disenfranchised is exactly a recipe for success, but where do we draw the line between criminal behaviour and legitimate grievances. There are a lot of people with undesirable job situations who feel politically disenfranchised, but who somehow manage to live inside the law. I wonder what will happen to their feeling of disenfranchisement if looters are given a pass?