This is my theory, I have no proof...
It was obvious to the cops that responded to the murder scene that OJ did it. But they thought the evidence was a little weak, so they gave the prosecution some "help" by taking one of the gloves and leaving it at OJ's house.
Unfortunately they were used to public defenders that convince their clients to plead out, not a high end team of lawyers that spent months poking holes in their case.
Just my theory...
No one planted evidence on oj haven’t you ever watched the first 48 there is no perfect crime idiots leave hats receipts drivers licenses all kinds of evidence very often without even realizing it
After the murders he parked abruptly an saw Alan Park at the main gate, He ran down a dark narrow path which probably would get him into his back door without being seen,. He smashed into an air conditioner jutting out from Kato’s room. Shocked by the impact and flustered he dropped the glove.
> But they [the police] thought the evidence was a little weak, so they gave the prosecution some “help” by taking one of the gloves and leaving it at OJ’s house.<
No way. At the time they hadn’t even investigated the case, and had almost no idea how much evidence there was. Also the police, like most persons, probably started off favorably disposed towards O.J., football star and comedic actor (I started off that way, and hoped he didn’t do it). Whether they disliked blacks or not, they wouldn’t immediately think, “Let’s frame this guy.”
Also, at that time Simpson could have had a foolproof alibi. The police didn’t know yet whether he had one or not. If they’d planted the glove, and then it turned out he was giving a speech somewhere, or appearing at a public event, then they would have put themselves at risk.