On 28 April 2013 a new public event, the Restoration of Sovereignty Day, was held in Tokyo to mark the 61st anniversary of the end of the US occupation of Japan. It had been proposed by Abe in 2012. Since the US occupation of Okinawa ended in 1972 and nearly three-quarters of US troops in Japan continue to be stationed in Okinawa, the event, which was attended by Emperor Akihito, was denounced by many Okinawans, who saw it as celebrating a betrayal. There were demonstrations in both Okinawa and Tokyo.