September 9, 2016
"A six-second clip posted online shows three men jostling the precarious rock sandstone pedestal, known locally as 'the duckbill,' which it resembles. Someone, apparently a witness, swears at what he sees; the rock tumbles to the ground with a thud; someone else screams, 'Got him!'... After the rock fell, [the video-maker] and his friends confronted the group. The group apparently felt they were doing a public service: A friend had broken a leg on the formation; it was a safety hazard, they said."
Link to NYT.