Was Modern Art Really a CIA Psy-Op? - https://news.ycombinator.com/item?id=23525366 - June 2020 (7 comments)
Pretty sure there have been other threads, including on the Peter Matthiessen (Paris Review) connection - anybody want to find them?
Edit: there's this: https://news.ycombinator.com/item?id=10963429 - and https://news.ycombinator.com/item?id=10964477 linking to https://www.salon.com/2012/05/27/exclusive_the_paris_review_....
Edit 2 - found some more:
During Cold War, CIA used ‘Doctor Zhivago’ as a tool to undermine Soviet Union - https://news.ycombinator.com/item?id=7991903 - July 2014 (30 comments)
Abstract Expressionism was (in part) a covert CIA operation - https://news.ycombinator.com/item?id=1891222 - Nov 2010 (1 comment)
Others?