Virtually everything that is happening now has antecedents in the 1950s, 60s, and 70s. From Jim Bovard at libertarianinstitute.org:
Elon Musk has opened the floodgates to expose the FBI’s latest war on Americans’ freedom of speech. The FBI massively intervened to pressure Twitter to suppress accounts and tweets from individuals the FBI disapproved of, including parody accounts. The FBI and other federal agencies also browbeat Facebook, Instagram, and many other social media companies.
Thus far, most of the American corporate media has ignored or downplayed the story, known as the Twitter Files. Since many of the individuals who the FBI got squelched were pro-Trump, the violation of their rights is a non-issue (or a cause for quiet celebration). At this point, it is difficult to know whether the scant reaction to the Twitter Files is the result of political bias, collective amnesia, or simply a total ignorance of American history.
The history of the FBI provides the best guide to the abuses that may be now occurring. From 1956 to 1971, the FBI carried out “a secret war against those citizens it considers threats to the established order,” a 1976 Senate report noted. The FBI’s Operation COINTELPRO involved thousands of covert operations to incite street warfare between violent groups, to get people fired, to portray innocent people as government informants, to destroy activists’ marriages, and to cripple or destroy left-wing, black, communist, white racist, and anti-war organizations. The FBI let no corner of American life escape its vigilance; it even worked to expose and discredit “communists who are secretly operating in legitimate organizations and employments, such as the Young Men’s Christian Association and Boy Scouts.”