Cosby, 80, is charged with drugging and molesting Constand while she was a manager of the Temple University women's basketball team and he was a high-profile university trustee. That earlier trial ended with a deadlocked jury and Cosby's retrial began on Monday.
The pioneering black entertainer's first trial ended in a hung jury in June past year, with a sequestered panel hopelessly deadlocked after six days of testimony and 52 hours of deliberations.
After she was wrestled to the ground and taken away in handcuffs, Rochelle was charged with disorderly conduct and released.
His retrial is now the most high-profile criminal case so far in a #MeToo world, the U.S. cultural watershed that has ruined the careers of a string of powerful men in Hollywood, politics and the media.
Cosby is set to face tough testimony from Constand plus five other accusers, including former supermodel Janice Dickinson.
Ms Constand's case, dating to 2004 when she was an administrator at Temple University, Cosby's alma mater, is the only one to go to criminal trial.
Opening statements were delayed for several hours while the judge sorted through allegations raised late Friday that a juror told a woman during jury selection that he thought Cosby was guilty.
"You're going to hear her describe to the best of her ability what happened", Steele said. Right when Cosby exited his vehicle, she ripped off her jacket and rushed toward the actor.
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Rochelle, 38, of Little Falls, N.J., had written on her torso the names of some of the many women who have accused Cosby of assault. O'Neill has ruled that Cosby's financial payment to Constand can be brought into the public for the first time at the retrial after Cosby lifted his objections - although experts say the disclosure of the payment could also hurt Cosby if jurors interpret the money as an admission that he did something wrong.
Though the accuser is a lesbian, Cosby says he had a consensual romantic relationship with her. The retrial is likely to last as long as a month. More recently she garnered media attention after she staged a topless protest at the retrial of Bill Cosby for sexual assault in Norristown, Pennsylvania.
A civil lawsuit between the two, in which he admitted to acquiring prescription sedatives for women he wanted to have sex with, was settled in 2006. One woman and one man are African-American, the same makeup as the jury for the first trial.
In addition to winning the acquittal of Michael Jackson in the singer's 2005 child-molestation case, Meserau famously defended Mike Tyson and Suge Knight.