The prosecution was blinded by their own arrogance and really underestimated the other critical factors surrounding that case....most importantly race and celebrity perception, no way in hell that many black ppl were going to convict OJ, and they definitely shouldn't have picked that many blacks for the jury panel. Marcia Clark represented a mindset that so many non blacks have towards the racial obstacles black people face on the regular, it's like some people think we're making the stuff up and the world really isn't like that for us. Gotta remember this is somewhat fresh off of the Rodney King situation, so even a whisper of police corruption to that jury was going to seal the deal pretty much.