The main reason why OJ Simpson was acquitted is there are some loopholes in the case that cannot be proved by the prosecutor. There is a lot of evidence that might prove that OJ was responsible for the killing. There was blood found on OJ’s clothes.
The main issue with some of the incriminating evidence is that they were not explained properly. They were explained in a very technical manner so people did not understand it at all. Another issue is that the cop who responded to the scene of the crime made a lot of racist remarks. This alone was enough to provide sympathy to OJ.
The OJ Simpson case was all over the news and every media outlet during the time of the trial. Between the infamous glove and his blood left in the crime scene, many people ask how OJ Simpson was not convicted for the murder of his ex wife and her friend Ron Goldman. Nicole and Goldman were murdered outside of Nicole's apartment in Los Angeles and Simpson was immediately put under investigation.
Everything from the car chase which ended in Simpsons arrest to the trial were the focus of nearly every American and the trial was one of the most publicized in history. The reason he was not convicted was because of reasonable doubt. He and his group of lawyers were able to put doubt in the mind of the jurors and crimes must be proven with 100% certainty.