No doubt that atrocities were perpetrated against Jehovah's Witnesses in 1972-73.
But what about the reports in 1975?
Here is an excerpt from a diplomatic cable sent to the US secretary of State in 1977.
The cable was released/declassified in 2009.
...
RE JEHOVAH'S WITNESSES, WHY DO WE GO BACK TO THE
EVENTS OF 1972‐73? THE EVIDENCE SUGGESTS, AND WE HAVE SO
REPORTED, THAT IN 1975 JW'S WERE NOT BEATEN OR OTHERWISE
PHYSICALLY PERSECUTED. THE LAWYER HERE WHO WENT TO BAT
FOR THE JW'S TO TRY TO GET MORE LENIENT TREATMENT FOR THEM
TOLD ME ON NO 12, 1977, AND I SO REPORTED IN MEMCON SENT
TO DESK, HE BELIEVED THE ATROCITY STORIES PUT OUT BY THE
JW'S IN 1975 WERE RE‐DOS OF 1972‐73 EVENTS; THAT HE FOUND
THE JW'S QUITE CAPABLE OF FALSIFICATIONS AND MISSTATEMENTS
IN FURTHERANCE OF THEIR CAUSE. IN TALKS I HAD THIS WEEK
WITH MISSIONARIES INMZUZU AND MZIMBA NONE WAS AWARE OF
ANY ATROCITIES IN 1975.