Soccer fans must receive permission from stadiums to bring banners. That’s because some material may be offensive and incite a dangerous situation. These Swiss supporters trolled Italy when they played them in a game. That’s because Switzerland qualified for the World Cup but Italy didn’t.
Italy is the most successful side in the world alongside Brazil. The neighboring countries maintain a strong rivalry when it comes to sports. Usually, Italy is the stronger of the two so Switzerland takes full advantage of these types of opportunities (via Live Soccer TV).