日比谷公園
Some major labour unions organize rallies and demonstrations in Tokyo, Osaka, and Nagoya. Japan has a long history of labour activism and has had a communist and socialist party in the Diet since 1945. In 2008, the National Confederation of Trade Unions ("Zenrōren") held a rally in Yoyogi Park attended by 44,000 participants, while the National Trade Unions Council ("Zenrōkyō") held its May Day rally at Hibiya Park. "Rengō", the largest Japanese trade union, held its May Day rally on the following Saturday (3 May), allegedly to distance itself from the more radical labour unions.