The Japanese city of Kamakura has passed an ordinance asking residents and visitors not to eat and walk at the same time. In 2018, more than 20 million people visited the city in Kanagawa prefecture just south of Tokyo, visiting some of Japan's finest beaches and most famous temples. But local residents have complained about the tourists leaving litter on the streets, as well as ignoring local etiquette which frowns on eating while walking. In addition to bad manners, the city is warning…