DAWIT ENDESHAW CLASHES between Ethiopian security forces and protesters demanding the release of an opposition politician and a media magnate have killed at least nine people in the Oromiya region surrounding the capital, according to health officials. The unrest highlights growing divisions in Prime Minister Abiy Ahmed's Oromo power base as powerful ethnic activists who were once allies increasingly challenge his government. The protests started on Tuesday after a social media campaign for the release of prominent Oromo opposition leader Bekele Gerba and media mogul Jawar Mohammed, both arrested days after the killing an iconic Oromo singer Haacaaluu Hundeessaa. Jawar…