I have to disgree here regarding the film's merit. There are a few quite interesting (and unique) films in that genre from the 70s that are little known to today's audiances. Most came out around Watergate ~'74 (so were topical in those days) but then have been kind of memory holed.

The Kremlin Letter, 1970 (https://www.imdb.com/title/tt0065950/) - I recall someone saying this film really shows the ugly underbelly of intelligence services. This is an interesting film but it is very dark and somewhat disturbing. This one predates Watergate - it is a Cold War spy flick and makes Smiley's People look warm and cuddly ..

The Conversation, 1974 (https://www.imdb.com/title/tt0071360/) - Gene Hackman's character resurfaces a couple decades later in Enemy of the State (1998).

The Parallax View, 1974 (https://www.imdb.com/title/tt0071970/)

The Tamarind Seed, 1974 (https://www.imdb.com/title/tt0072253/) - A subtle movie that superficially seems like a romance.

So that's from the top of my head. All are eminently watchable films and some possibly classic canon contenders.

I haven't heard of those films, but they sure seem interesting. Thanks for the recommendations!

"memory holed" implies a deliberate coordinated attempt by the mass media and/or powerful actors to suppress some information they don't want knocking around the ether

it isn't a "cool" way of saying 'forgotten'