More Fake News: Who's On The Washington Post Blacklist?

The Washington Post recently featured a front page article accusing over 200 websites of being part of a vast Russian propaganda campaign to steal the election from Hillary and give the presidency to Trump. Major sites like Drudge and Zero Hedge are allegedly part of this vast conspiracy, as is the Ron Paul Institute. The Post article links to a "study" by an anonymous group as its source for the wild allegation. And that source calls for a federal criminal investigation of these alternative news sources. Is this neo-McCarthyism about to turn dangerous for free speech?