You're supposed to organize into a hierarchy, find a leader and follow them so they can organize things and make sure the tribe survives.
Unfortunately, so much of our modern picture of the world is formed from TV-and-internet bullshit that people can't even determine what's real or fantasy, and so sometimes the wiring malfunctions and someone sort of snaps into obedience to someone like Donald Trump. For a certain type of mental layout it's as unavoidable as flinching when something comes near your eyes, and it's terribly dangerous.
There's a play "Rhinoceros" by Eugene Ionesco which deals with what it looks like when it's happening to people around you. Or, just exist in the US today if you want to see another example 😢