Wikipedia
Otpor! (, ) was a political organization in Serbia (then part of FR Yugoslavia) from 1998 until 2004.
In its initial period, 1998-2000, Otpor! began as a civic protest group, eventually turning into a movement, which adopted the Narodni pokret (the People's Movement) title, against the policies of the Serbian authorities that were under the influence of Slobodan Milošević who at the time was President of Yugoslavia. Following Milošević's overthrow in October 2000, Otpor! became a political watchdog organization monitoring the activities of the post-Milošević period of the DOS coalition. Finally, during fall 2003, Otpor! briefly became a political party which soon folded due to its failure to pass the 5% threshold needed get any seats in the Serbian parliament.
Founded and best known as an organization employing nonviolent struggle as a course of action against the Milošević-controlled Serbian authorities, Otpor! grew into a civic youth movement whose activity culminated on 5 October 2000 with Milošević's overthrow. In the course of a two-year nonviolent struggle against Milošević, Otpor! spread across Serbia, attracting in its heyday more than 70,000 supporters who were credited for their role in the 5 October overthrow.
After the overthrow, Otpor! launched campaigns to hold the new government accountable, pressing for democratic reforms and fighting corruption, as well as insisting on cooperation with the International Criminal Tribunal (ICTY) at the Hague.
Soon after the 2003 elections, Otpor! merged into the Democratic Party (DS).