The rally is the culmination of student-led protests that have taken place across Serbia since the deadly collapse of a train station canopy in the city of Novi Sad last November

The rallies are expected to be the biggest in decades. Near daily student protests began in December following the deaths of 15 people when a roof at a railway station collapsed on November 1 in the northern city of Novi Sad, a disaster opponents blame on corruption under Vucic.

A crowd estimated to be 300,000 strong has converged on Belgrade, demanding an end to what they claim is a criminal enterprise masterminded by President Aleksandar Vicic which they say has taken control of Serbia.