Three people were arrested Tuesday as citizens opposed to Japan's imperial system rallied in Tokyo's upscale Ginza district and other areas, protesting the emperor's enthronement ceremony held at the Imperial Palace the same day, police said.The three were arrested on suspicion of obstructing officers from performing their duty after clashing with riot police deployed to the area, the police said.According to organizers, around 500 people marched approximately 2 kilometers, between JR Shimbashi Station and Kyobashi subway station, chanting "(The ceremony) violates the Constitution. Let's en…READ FULL ARTICLE