The OJ criminal jury were not a bunch of brainless racists. Three of them were white. I would recommend the book
Madam Foreman, by Armanda Cooley, who was the forewoman of the jury. She explains the jurors' reasons for their verdict, including the clear indications that the sock blood and the back-gate blood were planted, the prosecution's failure to establish a motive, the obvious lies told by Detectives Fuhrman and Vannatter regarding the search warrant, etc.
As for the blood evidence, I discuss this issue in detail in "
Where Did 'All that Blood' Come From?". The total amount of OJ blood that the police claimed to find--i.e., all the OJ blood they said they found at the crime scene, in OJ's Bronco, and at OJ's house--amounted to less than 15 drops (13 or 14 drops, depending on if you round up or down), which is right about the same amount of blood that was inexplicably missing from the blood vial that the police drew from OJ the day after the murders. The LAPD nurse testfied, twice, that he withdrew 8 cc's of blood from OJ, but when the prosecution was forced to allow the defense to examine the blood evidence, OJ's vial only had 6.5 cc's in it. This was the same blood vial that Detective Vannatter failed to log in for evidence for several hours, in violation of established procedure (and, by his own admission, for the first time in his career), and we know that for part of that time he was at OJ's house.
Articles on other aspects of the case are also available on my website on the OJ Simpson case:
The O.J. Simpson Case