BELGRADE, Serbia (AP) — Thousands of mainly young people in Serbia embarked on a two-day march from Belgrade on Thursday, aiming to join a major rally in the country's north this weekend that will mark the anniversary of a deadly train station disaster .

The concrete canopy collapse at the central train station in Novi Sad killed 16 people on Nov. 1. The tragedy has unleashed a youth-led protest movement against autocratic President Aleksandar Vucic .

Protesters believe the victims died because government corruption led to sloppy renovation work at the station. They have been demanding accountability for the disaster, and an early parliamentary election that they hope will oust Vucic's populist government from power.

Flag-waving university students on Thursday led the huge colum

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