God Save the King was loudly booed at Hampden Park by Scotland fans ahead of their match against Northern Ireland. The ‘friendly’ clash between British rivals was anything but before a ball had even been kicked when both sides lined up on the pitch. The home crowd made their feelings clear when God Save the King played out over the speakers for Northern Ireland’s anthem. Loud boos could be heard around the stadium with fans attempting to drown out the national anthem. Scotland fans did something similar during their home match against England back in September last year. The small section of N…