“The Fremen? Yeah good riddance to ‘em.”
“You ever meet one? You know…before the Sardaukar”
“Yeah, they all ‘ad those uncanny eyes, starin’ into me soul. Town fremmies weren’t so arrogant – but all ‘ad that look about ‘em. Like you was not worthy to kiss their boots.”
“Like noble born?”
“Nah. Noble born are top of the pyramid cause that’s the way it works. The fremmies are at the bottom o’ the pyramid but act like they come from the top.”
“I heard they was good fighters. Gave the Sardaukar a fierce fight.”
“They was tough, no denying it. Seen one get grabbed by some Harko guards once. Fight was over before it began – three dead Harko and one vanished fremmie. Bloody wisps o’ the desert.”
“Now they’re dead.”
“Nothing left of ‘em but a few haunted sietches.”
“Shame the Emperor had to have them all killed.”
“Can’t ‘ave been many of ‘em to start with. Living in the desert, no water, just worms, storms and sand. Sardaukar did ‘em a favor, you ask me…”

The exile of the Zensunni is an event buried in history. The schism between the warlike teachings of Maometh Saari and the Catholic philosophical leanings of Ali Ben Ohashi* led to a great exodus from Old Terra.
The Zensunni were a persecuted people wherever they went. Space travel being limited to slowships and the presence of the infinite void heightened the strangeness of those who spent time there.
On every planet, the Zensunni found disdain – simple indifference, to military blockades, to violent raids and the slavery.
Like a tree shedding leaves as winter comes, so too did the Zensunni shed their weak and their infirm – until all that remained was a core of hardwood.
Zensunni philoshopy has spread across the Imperium – their wandering influenced so many of the worlds they touched – but we can only speculate as to where the final, hardened core of the Zensunni ended up.
*There are some sources who claim that his second wife, Nisai, was actually the mind behind the philosophy, while Ali Ben was only a mouthpiece.

The events of the Sardaukar pogrom of 10195 are well documented by other sources, so I will spare you the rehash. Instead, I share my speculations on the truth of the so-called Fremen genocide.
- The Sardaukar are notoriously arrogant. They admit to nothing less than total victory.
- The census records from Arrakis were poorly maintained during the Harkonnen governership and the Fremen population numbers are underreported.
- The Spacing Guild prevents all low altitude flights and satellites over Arrakis, at the risk of loss of transport privileges.
- The Fremen had intricate technology adapted to desert survival.
Considering the above, I speculate that during the pogrom, the Fremen withdrew to the southern hemisphere of Arrakis. They are bribing the spacing guild with mélange to protect their territory.
As the saying goes “Do not count a human dead until you have seen his body. And even then you can make a mistake.”