Dune is the story of the Kwisatz Haderach - the one who is everywhere at once.
Now the movies are showing with the illusion that Paul Atreides is the 'hero' and Kwisatz Haderach, but really - he (and his 3500 year long 'Tyrant' son) is the most ruthless Tyrant more genocidal than the evil Harkonnens.
In truth, Duncan Idaho is the real Kwisatz Haderach. He who is killed protecting Paul Atreides. He who is reborn as a Ghola (Clone) and a Ghola who is the first to regain his memories and spirit. Thus, after each 'Ghola Regeneration' - he is still there thousands of years later. For he is indeed one (person) who is everwhere (through time) at once.
These movies are in time ready for the French Messiah (Atreides) and the Last Great Moslem Islamic (Fremen) Jihad.
See. Some things are ohhhh so predictable, here on this little finite world.
https://www.youtube.com/watch?v=0wJr9GwrMV8