Is it nations and nationality, like USA, Russia, or is it the billionaires who change and influence policies or is it the head of major religions or big companies like Google?
Sometimes I really start to believe in conspiracy theories because indeed I feel this world is more evil than I can imagine. And really, the most evil I believe controls the whole world.
It's the balance of them and it's quite obvious when you think about it. Occasionally one group seem to take more power over others but no one group is really in "in control" of everything. People who think that world is controlled by one organization etc usually can't handle the idea of world being so chaotic and they seek meaning from that chaos.
It's comfortable to think that someone is in charge or watching you. That's why people believe it, even if it would be something "evil" as it creates the sense of purpose.