Nothing happens without the consent of the Establishment - with the monied/banking class at the top.
From our elite universities, talent would be identified, recruited, and placed in government, media, academia, military, etc.
From there they would have ladders of advancement lowered to them, and they would then populate the institution with like-minded traitors.
This process began in earnest in 1913 onward when Woodrow Wilson, a puppet to the Robber Barons, was manipulated into the Presidency.
It only took about 25 years to completely infest our government and institutions with communists, Marxists, and other disloyal and traitorous people.
The way to look at communism is that it is a department within a global corporation that is controlled by the banking class.
Today, BIS is completely independent of any government oversight or control, but even if it were subject to some oversight, the government or agency administering that oversight is also controlled by the banking elite.
It's taken them 100 years to build the colossus that is their global control infrastructure. Today, they are all powerful and untouchable.