There is an inertia to the universe. It is vast, and massive. It takes a lot of energy to make more than an ephemeral ripple in it. And even then, on the next scale, nothing has happened at all.
What we are seeing happen on the human scale is a vast loss of perspective. Perhaps it is because history is neglected, perhaps logic, probably both and more.
It's easier sometimes to assume it's all being done deliberately, because the result seems to be cascading chaos. This ignores the fact that man is not at his core a rational creature. Panic him, and he scatters in all directions, and the panic spreads.
Who made the mother cat fall? Who plotted out how the kittens would scatter and hide?
And who kept telling the kittens the sky was falling, even after the noise had ended and Mama turned out to be okay? Well, in the video, no one. Eventually the kittens emerged and calmed down. It didn't hurt that Mama was there to reassure them.
Humans, however, tell each other the sky is still falling. If there's no one else around to do it, they'll tell themselves the sky is still falling, and are even determined to reject reassurance if it's offered. You can tell them 'til you're blue in the face that what they're telling themselves is contradicted by what they see with their own eyes (as opposed to the heavily filtered version of reality they get from external sources), but they'll insist on believing the worst.
It must satisfy some emotional need in certain kinds of people but I can't for the life of me figure out how or why.