The blood and brain matter wasn't thrown backward into Hargis. It was dispersed forward and upward and Hargis simply drove through it. It's not a difficult concept to grasp.
LOL! Yet another example of how uninformed you are about well-known, widely discussed evidence.
Hargis said he was splattered with blood and then with brain and that the particulate spray hit him with such force that he thought he himself had been hit by concrete or something:
I was splattered with blood... then I felt something hit me. It could have been concrete or something, but I thought at first I might have been hit. (Daily News, November 24, 1963)
When President Kennedy straightened back up in the car the bullet hit him in the head, the one that killed him and it seemed like his head exploded, and I was splattered with blood and brain, and kind of a bloody water. (6 H 294)This is not surprising, since Charles Brehm, who was standing across the street from the grassy knoll, said he saw a piece of skull blown backward and to the left from JFK's skull when his head was hit:
It was very definite then that he was struck in the head. . . . I saw a piece fly over in the area of the curb. . . . It seemed to have come left and back. . . . Whatever it was that I saw did fall both in that direction and over into the curb there. (Associated Press article, 11/22/1966) Patrolman B. J. Martin, riding to the
left of Hargis and to the left rear of the limo was also splattered with blood, though not as forcefully as Hargis was. Martin said blood splattered onto his windshield, his motor, the left shoulder of his uniform, and the left side of his helmet (6 H 292). He added that the blood was accompanied by what looked like pieces of flesh:
Mr. BALL. And were there any other spots of any other material on the helmet there besides blood?
Mr. MARTIN. Yes, sir. There was other matter that looked like pieces of flesh. (6 H 292)And, no, the particulate spray was not blown "forward and upward." Where do you get that? Do you have a version of the Zapruder film that no one else has seen? Much of the spray was blown rightward and downward, which is why we can still see part of Jackie's head in Z313 and nearly all of her head in Z314.
On an important side note, the Zapruder film does
not show any amount of blood and brain matter being blown, or floating, backward and to the left from the right-frontal explosion seen in Z313-314/315. The blob of particulate spray impossibly disappears by Z316, if not by Z315, whereas ballistics tests and footage of head shots prove the spray should have remained visible for at least six frames.
Not only does the Zapruder film show no particulate spray being blown toward Hargis and Martin, but it shows no large cloud of blood and brain matter that Hargis and Martin could have driven through.