A selection of powerful news photographs taken around the world this week.

Image source, Russell Cheyne / ReutersImage caption, Activists in Glasgow symbolically set George Square on fire with an art installation of faux flames and smoke ahead of the crucial UN climate conference (COP26), featuring almost 200 countries, which is due to begin on 31 October.Image source, Peter Nicholls / ReutersImage caption, Pop culture exhibition MCM Comic Con took centre stage at London's ExCel centre from 22-24 October.Image source, Dan Kitwood / Getty ImagesImage caption, Around 450,000 pumpkins are available at the annual pick-your-own event, which takes place on more than 60 acres of land at Tulleys Farm, near Crawley, in southern England, throughout October.Image source, Dimitar Dilkoff / AFPImage caption, Red Square provides a spectacular autumn backdrop for people in central Moscow.Image source, Noah Berger / AFPImage caption, A selfie taken, fittingly, in front of the newly unveiled logo for Meta, the new name for Facebook's parent company, in Menlo Park, California. The company said the new name would better encompass what it does, as it looks to move beyond social media into areas such as virtual reality and a planned "metaverse".Image source, Pascal Rossignol / ReutersImage caption, Golden and rust-coloured leaves adorn the vineyards of Verzenay, in the Champagne region of north-east France.Image source, Sima Diab / Getty ImagesImage caption, An installation entitled Together, by Lorenzo Quinn, is displayed close to the Great Pyramid of Giza in Cairo. The exhibition, Forever Is Now, features sculptures around the Giza plateau, with works by Egyptian and foreign contemporary artists.Image source, Leon Neal / Getty ImagesImage caption, Little Amal, a giant puppet depicting a Syrian refugee girl, is addressed by the Archbishop of Westminster, Cardinal Vincent Nichols, in Westminster Cathedral, near the end of an 8,000km (4,970-mile) journey across Europe to the UK to raise awareness of the challenges faced by refugee children.Image source, AFPImage caption, Sudanese protesters roll barricades into place as they demonstrate against a military coup that thwarted the transition to civilian rule in the Al-Shajara district of southern Khartoum. Coup leader Gen Abdel Fattah Burhan dissolved civilian rule on Monday, arresting political leaders, and called a state of emergency. Soldiers opened fire on crowds and reportedly killed 10 people.Image source, Edgard Garrido / ReutersImage caption, A butterfly perches on a cempasuchil marigold in Xochimilco on the outskirts of Mexico City. The flower is used during Mexico's Day of the Dead celebrations.

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