Anti-Japanese demonstrations spread to more than 20 cities in China Sunday, as Tokyo dismissed China's opposition to Japanese activists landing on disputed islands in East China Sea. Chinese demonstrators waved national flags and chanted angry slogans as they protested the arrest of Chinese activists who landed last week in the islands known as Senkaku in Japan and as Diaoyu in China. In some cities, protesters vandalized Japanese made vehicles and clashed with police who tried to restrain them. Earlier Sunday, a group of 10 Japanese activists, including local lawmakers, swam ashore and unfurled Japanese flags on one of the disputed...