Tens of thousands rallied in downtown Belgrade against populist President Aleksandar Vucic and his government, the latest in a series of anti-corruption protests that have shaken his 13-year firm grip on power.

Slovakian Prime Minister Robert Fico was gravely injured in an apparent assassination attempt that rocked the small country and the rest of Europe just weeks before an election.

When a 13-year-old boy last week opened fire on his fellow students in a school in Belgrade, and a day later a man killed people at random in villages south of the Serbian capital, the country came to a standstill.