His own lawyers knew it, which is why they had to present the defence they did, and it was only when the prosecution demanded OJ put on the gloves and they found a reporter to say she had interviewed Mark Fuhrman for a TV show and he was a racist, did they have anything to present to confuse the jury. Throw in Rodney zking and the tinderbox that was LA at that time and you get the verdict and the outpouring of black emotion.
He is, was, and always will be guilty as sin. He murdered his wife by almost severing her head and when the waited showed up with her glasses, he slashed him to death, too, and threw him in the bushes, then hurried off to the Bronco to get back to Rockingham and jet off to Chicago. He even changed the story of how he got the cut knuckle numerous times, but courtroom antics helped mask all the evidence.
OJ is a murderer and a convicted armed robber and hijacker. He was just never convicted of the murders in a court of law because of a biased and racist jury. This time, it worked in favor of the black man, which is ironic considering he turned his back on his black history and didn't identify with the black community at all.