Without reference to any one mythic statement of this principle, the momentum of actions in societies have consequences. At a fundamental, perhaps even a physical level, momentum builds and that force requires great energy to divert from it trajectory.
This is no a biological form but a form of physics that described by karma. Despite what many people think particularly in the west, karma is action and reaction.
There is no shortcut to karmic implications. The confusion comes from people seeing an evil person in charge of a mass movement as the complete embodiment of that movement. Chopping off the head of that person does not kill the movement. It will affect the trajectory but not in a simple manner.
That is the essence of the Kali Yuga story. Eliminating Trump does not stop the evil that far predates him as a crude opportunist who happens to be committed to profiting from that evil. It will play out.