The demonstration, one of the biggest in years, is part of wider protests that have taken place across the country after a concrete canopy collapsed at Novi Sad railway station last November, killing 15 people.
Climate activists from the Dutch branch of Extinction Rebellion blocked traffic at a major entry and exit point to the city of The Hague.
Euronews has spoken to five students across Serbia who are part of the Western Balkan country’s protest movement demanding justice after the deadly Novi Sad train station awning collapse killed 15 and injured two.
Wednesday’s shooting came after a bar brawl and saw a 45-year-old man go home to get his gun before returning to the bar and opening fire.