NAIROBI, Kenya (AP) — A Maasai community near Tanzania's Serengeti National Park may be able to keep its traditional homeland after the country's president said on Twitter that the government would not take their land. The advocacy group Avaaz has publicized the case of the Maasai land near the town of Loliondo, making it a global cause that mobilized more than 2.3 million people to sign an Internet petition. The land, used by the Maasai for cattle-grazing, is a vast plain dotted with acacia trees and watering holes, where wildebeest and zebra gather in huge herds for annual migrations.