Armed police officers move at the crime scene in front of a hospital in Ostrava, Czech Republic, 10 December 2019. According to police, four people have been killed in a shooting at a hospital in Ostrava. Two others suffered severe injuries in the incident. The police is looking for a suspected gunman who is at large, media reported. (Photo by Lukas Kabon/EPA/EFE)





Armed police officers move at the crime scene in front of a hospital in Ostrava, Czech Republic, 10 December 2019. (Photo by Lukas Kabon/EPA/EFE)





People attend a Human Rights Day march in the district of Causeway Bay in Hong Kong, China on December 8, 2019. (Photo by Laurel Chor/Reuters)





A protester wearing a Guy Fawkes mask waves a flag during a Human Rights Day march, organised by the Civil Human Right Front, in Hong Kong, China on December 8, 2019. (Photo by Danish Siddiqui/Reuters)





A demonstrator resists while being detained by riot policemen during a protest against Chile's government in Santiago, Chile on December 9, 2019. (Photo by Pablo Sanhueza/Reuters)





A demonstrator climbs on a riot police vehicle during a protest against Chile's government in Concepcion, Chile, December 9, 2019. (Photo by Jose Luis Saavedra/Reuters)





Algerian security forces contain protesters shouting slogans during an anti-government demonstration in the capital Algiers on December 9, 2019, ahead of the presidential vote scheduled for December 12. Algeria's contentious presidential election campaign is highlighting the vast gap between youth at the heart of a reformist protest movement and an ageing elite they see as clinging to power. The poll will see five candidates, all linked to ex-president Abdelaziz Bouteflika, compete for the top office. But protesters, whose mass mobilisation forced the ex-strongman to resign from his two-decade tenure in April, have rallied weekly to say sweeping reforms must come ahead of any vote. (Photo by Ryad Kramdi/AFP Photo)





This handout photograph courtesy of Michael Schade shows the volcano on New Zealand's White Island spewing steam and ash minutes following an eruption on December 9, 2019. New Zealand police said at least one person was killed and more fatalities were likely, after an island volcano popular with tourists erupted on December 9 leaving dozens stranded. (Photo by Michael Schade/AFP Photo/Handout)





An image provided by visitor Michael Schade shows a damages helicopter on White Island (Whakaari) volcano, as it erupts, in the Bay of Plenty, New Zealand, 09 December 2019. According to police, at least five people have died in the volcanic erruption at around 2:11 pm local time on 09 December. The island is located around 40km offshore of the Bay of Plenty. (Photo by Michael Schade/EPA/EFE)





Extinction Rebellion protesters block Cranbourne Street, outside Leicester Square Station in London, England on December 9, 2019, to demand action on air pollution. The roadblock includes 25 breeze blocks glued to the road to symbolise the 25 Londoners who die each day as a result of air pollution and eight people are glued onto the blocks. Extinction Rebellion's 12 Days of Crisis to ensure the Climate and Ecological Emergency is at the top of the agenda this General Election. (Photo by Guy Bell/Rex Features/Shutterstock)





Smoke and flames from a back burn, conducted to secure residential areas from encroaching bushfires, are seen at the Spencer area in Central Coast, some 90-110 kilometres north of Sydney on December 9, 2019. Australia is experiencing a horrific start to its fire season, which scientists say began earlier and is more extreme this year due to a prolonged drought and the effects of climate change. (Photo by Saeed Khan/AFP Photo)





A woman walks through Martin Place in Sydney , Australia on December 9, 2019, wearing a face masks to try and limit the effects of the smoke. (Photo by Jessica Hromas/The Guardian)





Climate change activist Greta Thunberg reacts during a news conference during COP25 climate summit in Madrid, Spain, December 9, 2019. (Photo by Juan Medina/Reuters)





Britain's Prime Minister Boris Johnson attends a warm up before the Hazel Grove United JFC vs Poynton Juniors girls soccer match, as he campaigns in Cheadle Hulme, Britain on December 7, 2019. (Photo by Toby Melville/Pool via Reuters)





A woman poses for a photo next to a banana attached with duct-tape that replaces the artwork “Comedian” by the artist Maurizio Cattelan in Miami Beach, Florida, December 7, 2019. Two of the three editions of the piece, which feature a banana duct-taped to a wall, have reportedly sold for $120,000. (Photo by Eva Marie Uzcategui/Reuters)





Revelers perform during the Myths and Legends parade in Medellin, Antioquia department, Colombia on December 8, 2019. (Photo by Joaquin Sarmiento/AFP Photo)





Zozibini Tunzi, of South Africa, is crowned Miss Universe by her predecessor, Catriona Gray of the Philippines, at the 2019 Miss Universe pageant at Tyler Perry Studios in Atlanta, Georgia, U.S. December 8, 2019. (Photo by Elijah Nouvelage/Reuters)





Zozibini Tunzi, of South Africa, takes her first walk as Miss Universe after winning the 2019 Miss Universe pageant at Tyler Perry Studios in Atlanta, Georgia, U.S. December 8, 2019. (Photo by Elijah Nouvelage/Reuters)