Ghana were struggling with Panama, camera cut to this fella who started doing rituals in the middle of the stadium... They ended up scoring a 95th minute winner.
That huge suspended screen structure is actually functional, not just a form for hanging displays. It weighs ~ 2.2 million pounds. The entire building is essentially designed around it.
The stadium is open at the sides, but covered with a membrane. This creates a scenario where you can get a lot of air (wind) moving quickly into the structure and causing the roof to billow and in the worst case scenario actually break
The hanging structure is a counter weight. It holds the membrane in place