An event on the steps of the Supreme Court on Tuesday, meant to celebrate the 100th anniversary of a landmark decision in favor of school choice, drew a single protester.

On June 1, 1925, the Supreme Court found an Oregon law mandating children attend public school unconstitutional in Pierce v. Society of Sisters. The now-defunct 1922 law was “backed by the Ku Klux Klan,” Defending Education legal counsel Sarah Parshall Perry said at the news conference.