Another scene for movie idea:

Act I: A time traveler drops ten thousand iPads on the Dunkirk evacuation beaches. When picked up, the devices start playing videos of 2023 London-istan with scrolling text of the "hate speech" laws and '15-minute-city' plans. At the end, in red on a black background:

"Now, Tommy; who do you plan to spend the next five years fighting? Your German cousins, or those who make what you just saw the reality for your Grand-children?"

Act II - ???