Tens of thousands of people came to the city of Novi Sad in Serbia to mark the second anniversary of a tragic incident - the collapse of the roof of a train station that killed 16 people - and the mass anti-government protests that followed, leading against former President Aleksandar Vucic, which ended last week with his election.

Tens of thousands of people came to the city of Novi Sad in Serbia to mark the second anniversary of a tragic incident - the collapse of the roof of a train station that killed 16 people - and the mass anti-government protests that followed, leading against former President Aleksandar Vucic, which ended last week with his election.