Every power zone has to work constantly to gain power and run faster than the present to stay there. Otherwise it can't stay as one. But I think you mean organisations like CIA has to goad every group against each other so the system wouldn't collapse? Keep the 'balance'? That's exercising maximal evil.
Have you seen the documentary called Stuxnet? Now, I'd believe that documentary was actually pushed by CIA to be made because we ordinary people of the world are so clueless about the 21st century wars. And you think they can't pick a patsy. I blame the Oswald obsession. Who cares who pulled the trigger to kill JFK, anyone who think this could be uncovered is out of their minds. You don't get to treat a military coup as a murder case.
I sometimes think that CIA has lost its own bet on the 'left' wings in the States because they calculated they would evolve into more violent movements after the 60s. They overestimated the American 'left', while underestimated the conformity of the hypermodern age and the apathy of the social media generations; their 'sameness' and lack of individuality.
The black legend is a phenomenon that gets repeated through out the history after the rise of 'secret history' literature. It's something that shaped all our collective memory, perceptions, expectations...etc. Its counterpart is golden or white legends.
"Catholics are bad, Protestants are good." (Black legend vs White legend.) It's Jewish money behind it. CIA did it. It's not that simple of course. There is a literature on it starting from 17th century. Jesuits and the Spanish Black Legend is the source and the best clear example. Everything from Illimunati, the Church to the 80s Satanist panic, commies are coming for the world, feminists are going to castrate all men, UFOs, reptile people... LOL The argument -and the research- is about how all these fears are fictional, and how these groups are loaded with exactly the same traits. When one runs its course and dies we find a new one to load those traits on. The cycle starts over again. In the end it's all bullshit.
In a larger perspective this is related to people inventing the concept of 'criticism' and 'context' in Early Modern Europe. (Not as what we know today.) Criticism is originally coming from recognising forged documents in the past. Context is more problematic because there is no latin word as 'contexere' while the written word; knowledge is coming from 'texere'. LOL That sounded wrong. I mean originally in Latin. It's obviously invented later.
I think today, it is about meme based literal midedness. The forms of the mediums we use. Myeh...