"I came here in support of my daughters".
More than 160 women and girls described sexual assault by Nassar in seven days of emotional testimony last week before his sentencing at Ingham County Circuit Court in Lansing, Mich.
Later, he apologized to the court, saying he lost control after hearing his daughters speak.
You can watch the full video of the incident below.
Before doing so, Margraves asked the judge for justice on his own terms.
He had asked Judge Janice Cunningham to let him have 5 minutes in a locked room with Nassar. "Would you do that?"
"I see the look in their faces, and I know they want to be able to do something but they can't", she told Nassar. Cunningham called Shannon Smith's remarks "unfortunate" and said Nassar did not authorize them.
Margraves almost reached Nassar, but was blocked by Nassar's attorney Matthew Newburg and then was restrained by at least three deputies.
"One thing I never like myself being is a victim".
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A GoFundMe was started in Margraves' name, but family attorney Mick Grewal of Grewal Law in Okemos asked it be shut down, as there were no charges and no defense to fund.
Following the recess in Friday's proceedings, the judge declined to cite Margraves for contempt of court.
All three of Margraves' daughters, Lauren, Madison Rae and Morgan, said they were assaulted by Nassar. The judge refused once more, and at that point Margraves lunged at Nassar. "My daughters and the other victims". She testified during day five of Nassar's sentencing in Ingham County.
"When you realize you're not alone and you have other people that have had similar experiences It will encourage people to come forward", said Roberts. "No one can behave like this".
At a press conference Friday afternoon, Margraves apologized again, but wanted to make it clear that he wasn't a hero.
"You haven't lived through it, lady", Margraves replied. But you can not do this.
People could be heard crying in the courtroom as Margraves was restrained, and later escorted out in handcuffs.
Therapists say this outburst also doesn't mean Mr. Hargraves or his daughters will find their pain suddenly dissipate. "We can not react by using physical violence and assault, against someone who has performed criminal acts".
"I don't know what it would be like to stand there as a father and know that three of your girls were injured physically and emotionally by somebody sitting in a courtroom". This is not helping your children.
A local police department in MI offered a public apology Thursday to one of the victims, who filed a complaint in 2004 but whose claim was dismissed. "Do not use physical violence".