Vienna; Belgrade, 12 August 1999 (RFE/RL) - Serbian opposition leader Zoran Djindjic says the "people's anger will be dangerous" for Yugoslav President Slobodan Milosevic if he stays in power beyond September or October. Djindjic made the remark in an interview published today in the Austrian newspaper Die Presse. Djindjic, head of the Democratic Party, will participate in an anti-government rally in Belgrade on August 19, alongside rival opposition leader Vuk Draskovic of the Serbian Renewal Movement (SPO). Djindjic said the opposition will demand a period during which Milosevic must accept an opposition transitional government and step down from power. He said if nothing happens during this period, the opposition will continue its struggle through "demonstrations, blockades and general strikes."