Interesting NYT story on the mental health toll suffered by people who work for screening companies and monitor the web for depraved content.
Reminds me of that old University of Wisconsin study that my brother participated in when he was a student: shown loads of graphic and nasty stuff over a lengthy period, he increasingly expressed more ambivalence about it—the toll deadening his normal sense of revulsion.
That profound desensitizing exacts its pound of mental flesh. In one company, 50 workers review 20m photos a week! The effect is compared to battle fatigue.