Domingo Benavides was driving his pickup truck along Tenth Street in Oak Cliff on 22nd November, 1963, when he claimed he saw Lee Harvey Oswald kill J. D. Tippet. However, he was not asked by the Dallas Police Department to view a line-up because "he didn't think he was very good at identifying people".
Benavides later gave evidence to the Warren Commission, and the CBS: The Warren Report. In 1965, his brother Edward Benavides, who resembled Domingo, was shot in the back of the head in a club in Dallas.
Domingo Benavides was convinced that Eddy's murder was a case of mistaken identity and that he was the intended victim.
As I was driving down the street, I seen this police car, was sitting here, and the officer was getting out of the car, and apparently he'd been talking to the man that was standing by the car. The policeman got out of the car, and as he walked past the windshield of the car, where it's kind of lined up over the hood of the car, where this other man shot him. And, of course, he was reaching for his gun.
And so, I was standing there, you know, I mean sitting there in the truck, and not in no big hurry to get out because I was sitting there watching everything. This man turned from the car then, and took a couple of steps, and as he turned to walk away I believe he was unloading his gun, and he took the shells up in his hand, and as he took off, he threw them in the bushes more or less like nothing really, trying to get rid of them. I guess he didn't figure he'd get caught anyway, so he just threw them in the bushes.
Domingo Benevides, a dark, slim auto mechanic, was a witness to the murder of Officer Tippit who testified that he "really got a good view" of the slayer. He was not asked to see the police lineup in which Oswald appeared. Although he later said the killer resembled newspaper pictures of Oswald, he described the man differently: "I remember the back of his head seemed like his hairline sort of went square instead of tapered off...it kind of went down and squared off and made his head look flat in back." Domingo reports that he has been repeatedly threatened by police, and advised not to talk about what he saw.
In mid-February 1964 his brother Eddy, who resembled him, was fatally shot in the back of the head in a beer joint on Second Avenue in Dallas. Police said it was a pistol shot, wrote up a cursory report and marked the case "unsolved."
Domingo's father-in-law, J.W. Jackson, was so unimpressed with the police investigation of Eddy's death that he launched a little inquiry of his own. Two weeks later Jackson was shot at in his home. The assailant secreted himself in the carport, fired once into the house, and when Jackson ran outside, fired one more time, just missing his head. As the gunman clambered into an automobile in a nearby driveway, Jackson saw a police car coming down the block. The officer made no attempt to follow the gunman's speeding car; instead, he stopped at Jackson's home and spent a long time inquiring what had happened. Later a police lieutenant advised Jackson, "You'd better lay off of this business. Don't go around asking question; that's our job." Jackson and Domingo are both convinced that Eddy's murder was a case of mistaken identity and that Domingo, the Tippit witness, was the intended victim.