I am currently reading a book, Outrage: The Five Reasons Why O.J. Simpson Got Away With Murder by Vincent Bugliosi, the man best known for prosecuting Charlie Manson. It's a pretty old book, but as many people were too young to remember the O.J. Simpson trial, I recommend it to anyone who is curious about that case.
As a quick review from me, the point of this book is not to make the case that O.J. was guilty. Of course he was guilty. Rather, Bugliosi points out exactly how the obviously unjust verdict came to be. He allocates the blame among almost everyone involved in the trial, not just the jury, who, although they certainly made a ridiculous decision, did not acquit O.J. just because most of them were black and they didn't like the LAPD.
The judge is criticized as being biased towards the defense, particularly because of his decision to allow the defense to cross-examine Mark Fuhrman on the subject of race, such as asking him if he had ever used the word "nigger", which of course turned the entire case into a racial issue. Bugliosi also accuses the prosecutors of being poorly prepared, and not introducing key pieces of evidence, such as the long, rambling tape of O.J. talking about how he cut his finger, and the circumstances of O.J.'s flight in the white Bronco (there was money, a passport, a change of clothes, and a disguise kit).
It's not perfect; sometimes Bugliosi just gets pissed and starts ranting at no one in particular, and comes off as a little arrogant when he talks about how much of a better job he would have done if he had been prosecuting the case. Still, though, it's a fascinating read and a dark recounting of one of the worst miscarriages of justice in American trial history.