"OJ was found, clearly, not guilty at his first trial."

Well, since 2 of the jurors later admitted that they had decided at the beginning that they were NOT going to convict him, no matter what the evidence, "clearly" is perhaps not a good description of the verdict.

There is an old saying that "A jury trial is a court procedure to determine which side has the better lawyer(s)". OJs 1st trial was a prime example.