How do privileged Americans like her get so bitter, angry, and self-righteous by age 23? Taliban Johnny was another young American nutcase. Their souls or personalities must be congenitally black, and they are willfully or truly ignorant of the fact that the terrorists and criminals they take up with are nothing but murdering and thieving thugs who prey first and foremost on their on people.
Basically, they're religious fanatics with massive egos. Only instead of embracing a religion, they embrace the Holy Granola of modern-day Leftist thought.
I imagine that if you are privileged, if you never had to work for anything you have, if you never had to earn anything by your own accomplishment, you might not have any great sense of self worth, after all. You might even feel unimportant. One way to compensate might be adopt a conceit that you have a high sense of moral judgment making yourself superior to the average person.
the various pics of the girl suggest a possible psychiatric disorder (e.g., bipolar disorder; borderline personality disorder). she looks depressed in the college photo, and she looks fanatical/crazy in the pics where she is burning the flag. (however, i am not making a diagnosis here--i am just speculating, based on published photos.)
i suspect, but have no evidence, that a lot of "activists" have undiagnosed psych disorders.