BELGRADE, Serbia (AP) — After a 2-day walk and a night out in the open, protesting Belgrade university students in Serbia on Sunday got a taxi ride home — free of charge.

The growing movement began following the collapse of a concrete canopy at the central train station in Novi Sad, killing 15 people.

Wrapped in blankets and huddled around fires at makeshift camps, Serbian students braved subzero temperatures in Novi Sad as they spent the night outside after a mass rally against corruption brought tens of thousands to the streets.