[IPS] Dar es Salaam -- At a rally to mark International Youth Day on August 12 in Tanzania's southern Mbeya region, John Mnyika stood with a determined expression, addressing his supporters. The air was charged with anticipation. Mnyika, the Secretary-General of Tanzania's opposition party, Chadema, was preparing to speak about the upcoming elections when the chaos erupted. Without warning, heavily armed police officers stormed the event, grabbed Mnyika, and dragged him away.