Nearly two weeks ago, a story that I had been blogging about almost nonstop for a week reached its conclusion when Robert De Niro decided to pull the antivaccine movie Vaxxed: From Cover-up to Catastrophe from the Tribeca Film Festival, of which he was one of the co-founders. Before that, he had revealed that it was he who had bypassed the festival's regular selection procedures and asked that the film be shown. All of this happened after an uproar over a film so full of antivaccine quackery, conspiracy theories about William W. Thompson (a.k.a. the "CDC whistleblower" in antivaccine circles…