The Supreme Court has struck down affirmative action in college admissions, forcing institutions of higher education to look for new ways to achieve diverse student bodies. In a 6-3 decision, the court overturned admissions plans at Harvard and the University of North Carolina, the nation’s oldest private and public colleges, respectively. The two programs violate the Constitution’s equal protection clause, Chief Justice John Roberts wrote for a conservative majority. Justice Sonia Sotomayor wrote in dissent that the decision “rolls back decades of precedent and momentous progress.” Associated Press Supreme Court reporter Mark Sherman explains what the details of the decision and what happened when the decision came down on Thursday.