Some people with good morals become group leaders. They come to the position of power with their best intentions. Like with fathers and sons, they want to be and do everything except what their predecessors were and did.
Then they see people lying to them. Subordinates just don’t listen. These leaders experience betrayals. They are threatened, perhaps even explicitly.
So policies are introduced. Measures are taken. Walls are being built. Everything repeats the history.
People feel like they were tricked by these new leaders. They were promised good things, yet they got the same old. So they go and pick another leader.
It’s a good reminder to establish policies from the very beginning and not to promise anything that doesn’t scale. Gosh, if only I would be interested in history.