This video is a protip for animators, a comedy reel and a horror short. You learn how to make a walking 3D character the easy way, then generate a startlingly realistic crowd scene with a few clicks and assets. Blink twice and the uncanniness, the repetitions and simplicities, become clear. But for just a moment, that's an inauguration crowd. Consider the idea of shallow fakes: things that only need to fool you for a moment.
(All hail the new trend of short, no-nonsense instructional videos.)