The Soviets mastered this, and the Russians with technology have fine. Tuned it to a precise science.
It is so good that the stuff you see and easily recognized as propaganda, is planted bait to distract you from the real underlying disinformation operations.
China on the other hand, is undertaking a massive intelligence gathering global database to create profiles on everybody. And I mean everybody. Then there are programs that cross reference relationships, jobs, travel, spending habits, Internet, usage, etc., to find vulnerable targets for current or future Needs.