The Marxist Left has always had a toehold or more in the NY Times and Wash. Post. You just had to know who to look at (read) and who they associated with.
Did you know that NYT Times leftist Vietnam reporter Elizabeth Becker was the only major newspaper journalist to participate in a “Hanoi Lobby” created/run anti-Vietnam protest? (In NY, about 1972. Will try to find the exact article). Other NYT writers and guest Op-Ed writers were KGB or Communist Party members/sympathizers, including Wilfred Burchett (KGB, Australian CP, Red Chinese operative during the Korean War), Anthony Lewis (communist disinformation specialist on Vietnam), and Obit page manager/writer, former 12 year CP member who the Party continued to count on to “write well about the left dead” (possible paraphrase from one of their theoretical journals (possible Political Affairs).
It goes back even further. NYT did positive stories on Stalin in the 1930s while he was starving out Ukraine. They also spiked stories of Jews, political dissidents interned in concentration camps during the late 30s in Nazi Germany.
Dont forget Walter Duranty, NY Times reporter who helped the Soviet Union hide the Holodomor.