Riot police fired tear gas to disperse scores of protesters rallying on Monday against plans to build on part of a national park in Kenya’s capital.Officers moved in and arrested at least nine people, including former Chief Justice David Maraga, outside the main entrance of Nairobi National Park, Reuters reporters said.Protesters - who waved placards marked with “Nature is not vacant land” and other slogans - say the plans, including a parking area for more than 1,000 vehicles, will...