The Democratic Party, the Serbian People's Party, the Party of Freedom and Justice and a number of other opposition activists urged their supporters and other citizens to participate in a two-hour peaceful march from the Skupstina (the National Assembly) building to the Gazela Bridge.
The protesters planned to block the bridge, which lies on the European route E75, connecting Hungarian capital Budapest with the Greek city of Saloniki, for two hours as demonstration of their intent.
The organizers later said their demands were partly fulfilled, as an extraordinary session of the Skupstina has been scheduled for May 18 to discuss changes in the Board of Directors of the Regulatory Authority of Electronic Media (REM) and the interior minister's responsibility.
They also urged the citizens of Belgrade to come out to the next protest set for May 19 in front of the Skupstina building.
The protests came amid a recent spike in violence in Serbia among young men. In the night of May 5 to May 6, 21-year old Uros Blazic killed eight people and injured 14 with an automatic gun in the municipality of Mladenovac near Belgrade. He reportedly shot a police officer and his sister, and continued to shoot at random people before he was apprehended by the police.
Two days before that, a seventh-grader shot eight children and a guard and wounded six children and a teacher with a gun in a Belgrade school. The shooter was arrested, but, since he is not yet 14, he is not liable to criminal proceedings. The boy was placed in a psychiatric ward.