On the gathering specifically of scientific knowledge, our paleontologist colleague Günter Bechly nails it.
The interesting psychological issue here turns upon the question of whether these people are deliberately lying or not.
On some subjects, the astroturf mob is particularly committed to a biased agenda.
The latest example comes in a New Yorker essay by Cory Taylor, a woman with a terminal illness.
Observe the now familiar evolution — guided by the media and “bioethicists” — of public sentiment, from outrage to apathy.