Reply #67: I can feed it to you in bite-sized pieces. Let's start with your question.

[Boojatta]

What did you have in mind when you asked "why"?

For example, you might want to know what goal they have and how feeling justified is anticipated to help them achieve that goal. You might want to know what personality characteristics, not involving conscious pursuit of any particular goal, motivate them to feel justified. You might want to know what aspect of a particular ideological system motivates its adherents to feel justified, how such an ideological system is created, and how it spreads.