Avengers: Age of Ultron (2015) tells the story of a sentient AI that wants to eradicate humanity in order to save Earth.
Long before we reach the red giant stage, stellar evolution will cause the Sun's luminosity to increase significantly enough to boil Earth's oceans, which will surely eradicate humanity, if not all life on Earth.
Not only is this strikingly similar to what Hydra tried to do in The Winter Soldier (preemptively eliminating threats before they reveal themselves), but Ultron quickly decides that the best and easiest way to make the Earth safe is to eradicate humanity.
It would have plunged the planet into nuclear winter and undoubtedly eradicated humanity as definitively as the dinosaurs were wiped out by that asteroid 65 million years ago.
That power eradicated human freedom.
Today it holds the key to solving the two greatest challenges facing humanity: eradicating poverty, and maintaining the stable climatic corridor in which civilisation can thrive".
To reform all humanity and eradicate all human vice and unhappiness seemed plausible enough to us at the time, just as it seemed an easy and uncomplicated matter to reform ourselves, to master all virtues and be happy..
One year later, the Skynet system is activated, begins to perceive humans as a threat, and eradicates much of humanity with nuclear weapons in the "Judgment Day" event.
The plot is also dissimilar in that the humans are already conquered and controlled by the sadistic Laowon, who wish to eradicate all of humanity for the crimes of one lone human.
She was not trying to "eradicate the world's dandruff" or "soften humanity's cuticles," nor was she trying to accumulate wealth in order to buy a fancy car.
