WASHINGTON — JUSTICES Antonin Scalia and Ruth Bader Ginsburg are ideological antagonists on the Supreme Court, but they agree on one thing. Their court is guilty of judicial activism.

“If it’s measured in terms of readiness to overturn legislation, this is one of the most activist courts in history,” Justice Ginsburg said in August in an interview with The New York Times. “This court has overturned more legislation, I think, than any other.”

But Justice Ginsburg overstated her case. If judicial activism is defined as the tendency to strike down laws, the court led by Chief Justice John G. Roberts Jr. is less activist than any court in the last 60 years.

Nonetheless, Justice Ginsburg’s impression fits with a popular perception of the court. In 2010 in Citizens United, it struck down part of a federal law regulating campaign spending by corporations and unions, overruling two precedents in the bargain. In June, it struck down parts of the Voting Rights Act and the Defense of Marriage Act.