What's common to the bullet in the head of a Palestinian in Hebron in March this year and the 1995 Rabin assassination? When the regime is in need, who are you going to call? Prof Yeduda Hiss...
March 24, 2016, shooting of a Palestinian in Hebron - still from B'Tselem video.
Prof Yehuda Hiss, formerly of the National Forensic Institute
OccupyTLV, September 1 -- Israeli media today report that Prof Yehuda Hiss provided in court an expert opinion in IDF soldier Elor Azaria's trial: That the Palestinian in Hebron did not die from Zaaria's bullet to his head... The testimony appeared more than a bit contrived, even for a layperson. It also contradicted the expert opinion of National Forensic Medicine Institute, which Hiss had previously directed. 
Azaria is on trial for what appears to many as extra-judicial execution. The reason for the prosecution in this case is that the incident was videotaped by a Palestinian, working with Israeli Human Rights NGO B'Tselem, and generated worldwide attention.  Many similar cases go unnoticed and are never even investigated.
The trial has evolved into an indictment of the occupation of Palestine, splitting Israeli society. It has also cost Defense Minister Yaalon his job and possibly his political career, after he supported the conduct of a trial in this case. On its part, the Israeli justice system, as usual, is trying to provide the fig leaf. 
It appears that Prof Hiss's appearance was intended to assist in such purpose. After all, Prof Hiss has a long history in the courts...
In one of his most controversial appearances, he provided an expert opinion in the 1995 Prime Minister Rabin assassination: The first post-mortem operation was performed by the Ichilov hospital pathologist, where Rabin died. However, later, the Shin-Bet called Prof Hiss to conduct a second post-mortem operation, which resulted in a report that contradicted the first one in critical points. Israeli law prescribes that all post-mortem operations related to criminal matters be documented by videotape. However, in the Rabin assassination case, it was claimed that no video recording existed of either operation. The official narrative of the Rabin assassination remains dubious. 
In between the two appearances, Prof Hiss was dismissed in 2012 from the National Forensic Medicine Institute in the wake of a scandal, which also raised concerns of massive fraud in his expert opinions over his long tenure - all to serve the State Prosecution. 
Judge (ret) Hila Gerstel, Commissioner of Prosecutorial Oversight (a newly created office, still in its formative stages), decided to look into the matter, primarily following the unusual conduct of the State Prosecution relative to forensic experts in the Roman Zadorov affair. Her initiative met staunch opposition by the State Prosecution, which eventually led to her resignation... 
Gerstel's report regarding the collusion between the State Prosecution and the National Forensic Institute under Prof Hiss's tenure had already been written and was scheduled for publication. However, the State Prosecution petitioned the Supreme Court to block the publication of the report, claiming "it would damage our reputation". The report has never been published...
Sounds incredible? It's only the tip of the iceberg. 
 2016-09-01 Prof Hiss: Death of the Hebron terrorist was not caused by Azaria's bullet _Arutz 7 [Hebrew]