Trial watchers, sociologists and even FX’s show “People v OJ Simpson” have argued that the jurors in O.J. Simpson’s murder case acquitted him as payback for the Rodney King beating. And in ESPN’s new event series, “O.J.: Made in America,” one juror finally comes out and says it. (snip)Interviewer: That was payback. Bess: Uh-huh. Interviewer: Do you think that’s right?At that question, she holds up her hands.