A police officer points a gun towards anti-extradition bill protesters who surrounded a police station where detained protesters are being held during clashes in Hong Kong, China July 30, 2019. Hundreds of people surrounded a police station in Hong Kong chanting free the martyrs after 44 activists were charged with rioting following weekend clashes between protesters and police defending China s representative office. (Photo by Tyrone Siu/Reuters)





A bleeding man is taken away by policemen after attacked by protesters outside Kwai Chung police station in Hong Kong, Wednesday, July 31, 2019. Protesters clashed with police again in Hong Kong on Tuesday night after reports that some of their detained colleagues would be charged with the relatively serious charge of rioting. (Photo by Vincent Yu/AP Photo)





Demonstrators demand the resignation of Guatemalan President Jimmy Morales, one wearing a T-shirt of Morales as a clown, outside the Presidential House in Guatemala City, Saturday, July 27, 2019. Demonstrators are protesting an agreement their government signed with Washington to require migrants passing through the Central American country to seek asylum there, rather than pushing on to the U.S. Before becoming president, Morales was a professional comedian. (Photo by Oliver de Ros/AP Photo)





Sudanese students protest in the capital Khartoum on July 30, 2019, a day after teenagers were shot at a rally against shortages of bread and fuel in the town of al-Obeid, about 420 kilometres southwest of the capital. Sudanese protest leaders cancelled planned talks with the country's ruling generals on today as they visited the town where five teenaged protesters were shot dead. (Photo by Ebrahim Hamid/AFP Photo)





A youngster, along with others, unfurls, a 100 meter- long Romanian flag as Romanians celebrate the national anthem day in Bucharest, Romania, Monday, July 29, 2019. (Photo by Vadim Ghirda/AP Photo)





A woman with her little girls helps them play seesaw installed between the border fence that divides Mexico from the United States in Ciudad de Juarez, Mexico, Sunday, July 28, 2019. The author of this seesaw is Ronaldo Rael, a professor of architecture in California. (Photo by Christian Torres/AP Photo)





Some of 1,000 soldiers joining the Salvadoran Armed Forces remain at Gerardo Barrios square in the historical center of San Salvador, on July 29, 2019, to be reviewed by Salvadoran President Nayib Bukele. Bukele ordered the incorporation of 1,000 men to the Armed Forces to reinforce his Territorial Control Plan against gangs. (Photo by Marvin Recinos/AFP Photo)





An armed policeman attends a drill amid the scorching summer heat on July 30, 2019 in Yangzhou, Jiangsu Province of China. (Photo by Meng Delong/VCG via Getty Images)





An iceberg floats in Disko Bay behind houses during unseasonably warm weather on July 30, 2019 in Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images)





Vladimir Volkov, Denis Yakovlev and Igor Volkov, members of the amateur rock-climbing community “Stolbists”, or Stolby goers, clean the surface of the Tsarskiye Vorota (Tsar's Gate) Rock on the bank of the Biryusa River while taking part in an ecological project in the Stolby national nature reserve in the Siberian Taiga area outside Krasnoyarsk, Russia on July 30, 2019. (Photo by Ilya Naymushin/Reuters)





Belgian shrimp fishermen ride their horses in the sea in the coastal town of Oostduinkerke, Belgium on July 29, 2019. (Photo by Yves Herman/Reuters)





The Barely Methodical Troupe perform on Calton Hill during the Barely Methodical Troupe Festival 2019 as a part of Edinburgh Fringe Festival in Edinburgh, Scotland, UK on July 30, 2019. (Photo by Iain Masterton/Alamy Live News)





Steam traction inspector Jim Smith is pictured with a new Azuma train standing alongside the Mallard steam locomotive at York Station, Yorkshire on July 30, 2019, as London North East Railway's new Azuma service is launched. (Photo by Danny Lawson/PA Images via Getty Images)





A Goodwood official prepares to brave the rain on the opening day of the Glourious Goodwood, racing festivall at Goodwood Racecourse, Chichester, England on July 30, 2019. (Photo by David Hartley/PA Wire Press Association)