An impromptu historical overview of the issues you’re raising: Russian intelligence infiltrated the OSS during World War II. Military intelligence provided a list of suspected Communist agents to the FBI and Joseph McCarthy after the war. This became an embarrassment to the CIA, particularly because Allen Dulles had been sympathetic to Alger Hiss before he realized Hiss was guilty. So the CIA deployed their media assets (Operation Mockingbird, centered around CBS and the Washington Post) to discredit McCarthy, whose investigation of Communist infiltration of the Army and of the CIA’s operations in postwar Europe was threatening to embarrass both the Army and CIA. The FBI didn’t trust the CIA and limited its information sharing, which created friction between the agencies. This was compounded when Soviet moles and alleged double-agents in MI6 (Cambridge Five esp. Kim Philby) and CIA (Otepka investigation, which included an investigation of Lee Harvey Oswald) were exposed and a molehunt began. CIA’s counterinteligence capability to pursue this molehunt was hampered by the fallout from Watergate and the Church Committee. The FBI kept the leftists out until the Bush administration, when government gender/racial quotas mandated hiring unqualified agents on the basis of gender and race. This grew worse from Clinton on, increasingly enabling Muslims to infiltrate the Bureau. Other intelligence agencies have also been politicized and infiltrated, notably the NSA and DHS. What Trump is doing is very necessary, whether the entrenched intelligence bureacracy likes it or not.
McCarthy was right. Only people who were there know how much of the smear they did of him was true, but I suspect not much. They railroaded and sabotaged him, just like they’re trying to do to President Trump.
But THIS TIME AROUND, we have true news sources, and, I believe we have more prayer warriors. That may sound strange, since in the fifties, the majority of the country was considered Christian, and I may be wrong, but I don’t think so. Time is short, and though Christians were terrified at the prospect of communism, they were also lied to by news sources, such as Edward R. Murrow, which they believed, because they were considered absolutely scrupulous.