By Tatyana Kekic in Belgrade Tens of thousands of people gathered in the southern Serbian city of Niš on March 1 to mark the fourth month since a deadly railway station disaster, in what has become the largest and most significant challenge to President Aleksandar Vucic’s decade-long rule.

Tens of thousands of people on Saturday joined protesting students in Serbia, at a rally proclaiming they will no longer accept injustice and corruption.