Yugoslavia Robert talks to reporter Alex Todorovic, who is in Belgrade. Thousands of opponents of President Slobodan Milosevic began gathering in the streets there tonight. They're voicing support for the man they say won last Sunday's presidential election, Vojislav Kostunica. During the day, police dismantled a platform outside the Yugoslav parliament building, where the demonstration speakers were to address the crowd. To avoid a confrontation, organizers moved the rally. A big turnout is considered vital to Kostunica's effort to win recognition of the election results. The government yesterday admitted Milosevic had come in second. But it says Kostunica failed to win an outright majority, making a run-off necessary.