Protesters in costume gather at Marble Arch in London at an opening ceremony to mark the beginning of the International Rebellion an event organised by Extinction Rebellion. AFP / Tolga Akmen

Farmers stand with their cows on a barge during the annual cattle drive from the Saletalm alpine pasture over lake Koenigssee to their wintering barns in Schoenau, southern Germany. AFP / dpa / Matthias Balk

A sculpture made by activists lays on the road at Lambeth Bridge during the Extinction Rebellion protest in London. REUTERS/Henry Nicholls

Russian President Vladimir Putin is seen during his holiday in the Siberian taiga, Russia. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

Riot police officers clash with anti-government protesters during a demonstration in Causeway Bay district in Hong Kong, China. REUTERS/Athit Perawongmetha

Syrian Kurds take part in a demonstration against Turkish threats at a US-led international coalition base on the outskirts of Ras al-Ain town in Syria's Hasakeh province near the Turkish border. AFP / Delil SOULEIMAN

Members of Sengwer community living in Embobut forest gather to march to the office of the President Uhuru Kenyatta, as they present a petition seeking to stop eviction from the forest they have called their home for centuries, and be recognised as a distinct tribe in Nairobi. AFP / SIMON MAINA