The Brandeis University law professor urged the graduates to work for social justice in her address Thursday.
Hill brought the concept of sexual harassment to national consciousness in 1991 when she testified during the Supreme Court confirmation hearings of Clarence Thomas.
She says she tried to honor her hero Harriet Tubman by showing courage during that time.
School officials have said she was selected, in part, because she's a strong female role model.
Her speech comes as many of the nation's top colleges are featuring female commencement speakers.
Hill is scheduled to deliver two more speeches in the coming weeks.
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