This is about two things: attacking her as an activist judge and ensuring their own survival.

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The judge backed a lawsuit by activist shareholder David Einhorn, who wants Apple to return more cash to shareholders.

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He has even refused to reappoint a judge to New Jersey's activist Supreme Court.

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Mr Cook said that Apple's cash was a "serious subject" but repeated his opinion that a lawsuit from activist shareholder Greenlight Capital was a "silly sideshow", despite a judge finding in favour of David Einhorn's hedge fund last week.

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Retired Judge Michael Kirby will chair the inquiry, working with UN special rapporteur Marzuki Darusman, and human rights activist Sonja Biserko.

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