Scottish shoppers mob supermarkets over Black Friday sales Officers attended 24-hour supermarkets in Glasgow and Dundee after shoppers waited impatiently outside for the stroke of midnight for Black Friday to begin. The crowds grew heated as fights broke out over discounted products, with some shoppers sending festive displays crashing to the ground. Silverburn sales Police arrived at the Tesco Extra at Glasgow's Silverburn shopping complex when scuffles broke out but, while the supermarket closed briefly, no arrests were made. An officer could be heard telling one swearing shopper: "You're getting nothing, get out." Another Tweeter described queues outside Buchanan Street's Apple Store as "very tense." Edinburgh's underwhelmed by the sales Despite Asda in Chesser preparing for the worst, Edinburgh seems to be the best behaved of the lot. Lewis Brown wrote on Twitter: "Walked to work along Princes' Street this morning, not a single queue outside a shop. Well done Edinburgh. Meanwhile, in Dundee... Police were called to the Tesco Kingsway Extra store in Dundee to help control large crowds of bargain hunters who had become frenzied and crashed into product displays. A statement from Police Scotland's Tayside division said: "For information the Tesco Extra, Kingsway West, Dundee has been closed at this time due to excessive numbers attending to purchase sale items. This decision was made by Tesco staff to ensure the safety of all their customers. Black Friday, traditionally a post-Thanksgiving discount shopping day in the United States, has become one of the busiest shopping days of the year. It made its way over to Scotland in the past few years. Braehead marketing manager Christine Macdonald said: "It was something retailers have been pushing over the last few years... [American] department stores saw it as the launch of Christmas after Thanksgiving. It was headlined by Apple at first, it was traditionally the only day of the year that Apple used to discount anything. Now every retailer is doing it. Around 30 shops at Braehead Shopping Centre opened at 8am. Since 2006, seven people have died in the United States during Black Friday frenzies, including one Walmart worker who was trampled to death. Main picture: Creative Commons Tesco by Gordon Joly, licensed under CC BY 2.0.