Thousands of Serbians protest in Belgrade against lithium mine

Controversial mining project is a political fault line in Balkan country over fears about environmental impacts

Thousands hit the streets in Serbia's capital Belgrade Saturday to protest against the rebooting of a controversial lithium mine set to serve as a vital source to power Europe's green energy transition.

Before the rally, two leading protest figures said they were briefly detained by security officials who warned that any moves to block roads during the protest would be viewed as illegal.