premise: Ethiopian-backed government troops on Thursday entered northern Mogadishu hours after Islamists abandoned the city they had controlled for six months, the country's premier and residents said.
  "We are already inside Mogadishu in some areas," Prime Minister Ali Mohamed Gedi told reporters in Afgoye township, about 20 kilometres (13 miles) west of the capital.
  Mogadishu residents in the Suuqaholaha district confirmed the troops had entered into the city from the north, where one said that crowds cheered the government forces he saw accompanied by Ethiopian soldiers.
  "I saw government troops in north Mogadishu. They have fully entered the town. People were cheering and shouting that 'Welcome our government'," said Nur Dirie, another resident
   Why did the crowd cheer?
hypothesis: government troops on Thursday entered northern Mogadishu