From the article: "McCarthy—brash and ill-mannered but to many authentic and true—boiled it all down to what anyone could understand: we had “lost China” and would soon lose Europe as well, because the State Department—staffed, of course, under Democratic Presidents—was full of treasonous pro-Soviet intellectuals. It was as simple as that."
Well, as the Venona project cables declassified in 1995 show, the State Department didn't just contain intellectuals that were pro-Soviet: it contained actual Soviet agents in contact with the USSR. This was by no means restricted to the State Department, but also included the Treasury, OSS (pre-CIA), and even the White House. See here: https://web.archive.org/web/20110514040131/http://www.access....
In addition, it is now known that the CIA ran an operation, at the request of Allen Dulles, to feed McCarthy false information about who in the government were Soviet spies with the deliberate purpose of discrediting him: https://skeptics.stackexchange.com/questions/48603/did-the-c....
Maybe this calls for a remake of "The Crucible", not as tragedy, but as supernatural horror.