josh mankiewicz: then, another critical decision, this one made by judge lance ito, who ruled the trial. judge ito: do you have enough evidence to convict oj simpson? of course, we do. josh mankiewicz: publicly, marcia clark seemed highly confident in her case back then. the fact that the case has been filed means that we do have sufficient evidence to convict him. josh mankiewicz: but privately, as clark told us, she sensed trouble early on. right off the bat, we've got a big push back in the african-american community. they don't like this case. they don't want to believe it. there was a sense of loyalty of investment in protecting an african-american icon who had made it. he was successful. he had made it. they did not want to see him taken down. even though he'd done virtually nothing for the community he'd come from? it was surprising. virtually nothing. this was not exactly your civil rights firebrand. and as he was quoted famously saying, i'm not black. i'm oj. josh mankiewicz: still, clark says she was convinced a strong case could be built primarily on the blood and dna evidenc