The propaganda technique of the repeated lie has been applied obsessively, against the “hockey stick,” the reconstruction of past temperatures on which Michael Mann and coworkers had been working from the 1990s.
It is rare in the history of science that a single piece of experimental evidence has been the object of so many attempts of demolition. Yet, all the serious reviews of the original data have basically confirmed the initial results. Being unsuccessful in demolishing the science, the attacks have moved against the scientist, Michael Mann himself, who has been subjected to an unbelievable denigration campaign, defamed, insulted, and even physically threatened.