Compiling a list of 10 very worst fears would be difficult, indeed.....taking it to the literal level. I agree on the impact and potential of all that's brewing politically/economically here and worldwide. I'd say many of us would end up with a lot of overlapping on our lists. Of course, the misguided "role models" to the young have a more insidious effect. I took the suggested list to not be the very worst personal fears.
The black-and-white version of the film that I saw had the greatest fear contained in a pit [as memory recalls

~ or tries to], with the person in question being suspended over and lowered slowly into the pit, ever-nearing their greatest fear. Their only way to survive this ordeal was to tell the authorities, the Big Brother people, to instead kill the person that they had already been determined to be their closest, most intimate human link.
As this process repeated itself, and people began to "betray" those nearest and dearest to them, the alienation process took hold, with each "partner" realizing that they had just been given the death sentence by their closest and most trusted loved one, so that the latter might survive.
The "United We Stand, Divided We Fall" phenomena finally complete ~ and the people walking about like zombies, for the shock and trauma of what they had just survived, yet for what, having both betrayed and been betrayed, the trust, intimacy, and connection destroyed, takeover and total control had become a matter of merely sweeping up the crumbs. I understand there was a colour version of the film, and I believe the version I saw was produced overseas. Was this the way it was depicted in colour? Or was the room an actual room? I only recall the pit.
~Lizzytysh