() — In a dissenting opinion Thursday, Supreme Court Justice Sonia Sotomayor called the court’s decision to upend affirmative action in college admission an “unjustified exercise of power.”

In her opinion, joined by Justice Elena Kagan, Sotomayor quoted Martin Luther King Jr., saying “‘The arc of the moral universe’ will bend toward racial justice, despite the Court’s efforts today to impede its progress.”

Justice Ketanji Brown Jackson recused herself from the case.

Sotomayor and Kagan were among the minority on the Supreme Court’s ruling that struck down affirmative action policies that allow for the limited use of race as a factor in college acceptance practices.

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The decision marks one of the biggest reversals for the court since it overturned Roe v. Wade last year. Colleges and universities now must re-examine how they admit students and find other ways to promote and achieve diversity.

Sotomayor criticized Thursday’s ruling, saying it “stands in the way and rolls back decades of precedent and momentous progress.”

“Ignoring race will not equalize a society that is racially unequal,” Sotomayor wrote.

This is a developing report. Refresh for updates.