A man is arrested by Police during clashes in Rotterdam, The Netherlands, 25 January 2021. Police's mobile unit is present and has carried out charges to clear the street. Some arrests have also been made and a water cannon has been used. Nationwide protest against coronavirus restrictions and curfew imposed by Dutch government broke out during the weekend in many Dutch cities, leading to some violent riots and clashes with Police. (Photo by Marco de Swart/EPA/EFE)

Students of Kiev's Olympic College perform during a rally in front of the Parliament building in Kiev, Ukraine, 15 September 2020. Students were protesting against the reorganization of the college, at risk of being closed, and the land where it rises which could end up for sale along with the facility's stadium. (Photo by Sergey Dolzhenko/EPA/EFE)

Bolivian wrestler Ana Luisa Yujra (L), aka “Jhenifer Two Faces” and Lidia Flores, aka “Dina, The Queen of the Ring”, both members of the Fighting Cholitas, fight at Sharks of the Ring wrestling club in El Alto, Bolivia, on November 24, 2019. After a fortnight hiatus due to anti-government protests and blockades, the Fighting Cholitas are back in the ring. The unrest was triggered by the disputed October 20 election, which Evo Morales claimed to have won and opposition groups said was rigged. (Photo by Ronaldo Schemidt/AFP Photo)

A protester clashes with a police officer in Athens' central Syntagma (Constitution) Square in this June 15, 2011 file photo. Greece triggered the regional financial crisis in 2009 when a far higher budget deficit than previously calculated emerged. The collapse of talks with creditors in Paris last November set off a month-long sequence of events leading to elections this week and proving Greece is still the region's weak link. The vote is expected to be won by Syriza, a far-left party opposed to the bailout, worrying investors and creditors alike. (Photo by Yannis Behrakis/Reuters)

Protesters wear masks, the left in the colors of the Kenyan national flag, as they join others carrying mock coffins and red-painted crosses, symbolizing the blood of the 28 non-Muslims singled out and killed in the recent attack on a bus in Mandera by Somali militant group al-Shabab, outside government offices in downtown Nairobi, Kenya Tuesday, November 25, 2014. (Photo by Ben Curtis/AP Photo)

Demonstrators protest during a rally against Venezuelan President Nicolas Maduro, in Caracas on April 19, 2017. Venezuela braced for rival demonstrations Wednesday for and against President Nicolas Maduro, whose push to tighten his grip on power has triggered waves of deadly unrest that have escalated the country' s political and economic crisis. (Photo by Juan Barreto/AFP Photo)

An opposition activist clashes with the police during a march against Venezuelan President Nicolas Maduro held on May Day, in Caracas on May 1, 2017. Security forces in riot vans blocked off central Caracas Monday as Venezuela braced for pro- and anti- government May Day protests one month after a wave of deadly political unrest erupted. (Photo by Federico Parra/AFP Photo)

Chinese soldiers leave after Chinese President Xi Jinping inspected troops of People's Liberation Army (PLA) Hong Kong Garrison at the Shek Kong Barracks in Hong Kong, Friday, June 30, 2017. Xi landed in Hong Kong Thursday to mark the 20th anniversary of Beijing taking control of the former British colony, accompanied by a formidable layer of security as authorities showed little patience for pro-democracy protests. (Photo by Kin Cheung/AP Photo)