From Wiki, enough for reasonable doubt:
Sundiata Acoli, Assata Shakur, Trooper Harper, and a New Jersey Turnpike driver who saw part of the incident were the only surviving witnesses.[134] Acoli did not testify or make any pre-trial statements, nor did he testify in his own trial or give a statement to the police.[135] The driver traveling north on the turnpike testified that he had seen a State Trooper struggling with a Black man between a white vehicle and a State Trooper car, whose revolving lights illuminated the area.[134]
Shakur testified that Trooper Harper shot her after she raised her arms to comply with his demand, the second shot hitting her in the back as she was turning to avoid it, and that she fell onto the road for the duration of the gunfight before crawling back into the backseat of the Pontiac which Acoli drove 5 miles (8 km) down the road and parked, and remained there until State Troopers dragged her onto the road.[53][134]
Trooper Harper's three official reports state that after he stopped the Pontiac, he ordered Acoli to the back of the vehicle for Trooper Foerster?who had arrived on the scene?to examine his driver's license.[134] The reports then state that after Acoli complied and as Harper was looking inside the vehicle to examine the registration, Trooper Foerster yelled and held up an ammunition clip, as Shakur simultaneously reached into her red pocketbook, pulled out a nine-millimeter weapon and fired at him.[134] Trooper Harper's reports then state that he ran to the rear of his car and shot at Shakur who had exited the vehicle and was firing from a crouched position next to the vehicle.[134]
Under cross-examination at both Acoli and Shakur's trials, Trooper Harper admitted to having lied in these reports and in his Grand Jury testimony about Trooper Foerster yelling and showing him an ammunition clip, about seeing Shakur holding a pocketbook or a gun inside the vehicle, and about Shakur shooting at him from the car.[51][107] Trooper Harper retracted his previous statements and said that he had never seen Shakur with a gun, and that she did not shoot him.[136]
Medical evidenceA key element of Shakur's defense was medical testimony meant to demonstrate that she was shot with her hands up and that she would have been subsequently unable to fire a weapon. A neurologist testified that the median nerve in Shakur's right arm was severed by the second bullet, making her unable to pull a trigger.[114]
Neurosurgeon Dr. Arthur Turner Davidson, Associate Professor of Surgery at Albert Einstein College of Medicine, testified that the wounds in her upper arms, armpit and chest, and severed median nerve that instantly paralyzed her right arm, would only have been caused if both arms were raised, and that to sustain such injuries while crouching and firing a weapon (as described in Trooper Harper's testimony) "would be anatomically impossible".[51][148]Davidson based his testimony on an August 4, 1976 examination of Shakur and on X-rays taken immediately after the shootout at Middlesex General Hospital.[148] Prosecutor Barone questioned whether Davidson was qualified to make such a judgment 39 months after the injury; Barone proceeded to suggest (while a female Sheriff's attendant acted out his suggestion) that Shakur was struck in the right arm and collar bone and "then spun around by the impact of the bullet so an immediate second shot entered the fleshy part of her upper left arm" to which Davidson replied "Impossible."[148]
Shakur's broken clavicle was a key element of her defense, and the implications of her injury for the differing accounts of the shootout were points of contention.
Dr. David Spain, a pathologist from Brookdale Community College, testified that her bullet scars as well as X-rays supported her claim that her arms were raised, and that there was "no conceivable way" the first bullet could have hit Shakur's clavicle if her arm was down.[149][150]
Judge Appleby eventually cut off funds for any further expert defense testimony.[51] Shakur, in her autobiography, and Williams, in Inadmissible Evidence, both claim that it was difficult to find expert witnesses for the trial, not only because of the financial expense, but also because most forensic and ballistic specialists declined on the grounds of a conflict of interest when approached because they routinely performed such work for law enforcement officials.[151]
Other evidenceNeutron activation analysis administered after the shootout showed no gun powder residue on Shakur's fingers; her fingerprints were not found on any weapon at the scene, according to forensic analysis performed at the Trenton, New Jersey crime lab and the FBI crime labs in Washington, D.C.[152] According to tape recordings and police reports made several hours after the shoot-out, when Harper returned on foot to the administration building 200 yards (183 m) away, he did not report Foerster's presence at the scene; no one at headquarters knew of Foerster's involvement in the shoot-out until his body was discovered beside his patrol car, more than an hour later.
http://en.wikipedia.org/wiki/Assata_Shakur#New_Jersey_Turnpike_shootout
