River Plate vs. Godoy Cruz

Once there was a 'soccer' team (they play futbol). They are called the Club Deportiva Godoy Cruz Antonio Tomba, Godoy Cruz or Tomba for short. As far as I understand, the team used to play in the B league but just recently moved up to the A league... so it was a big deal that they were playing River Plate. River Plate is from Buenos Aires and is one of the most renowned teams in the league. We got the chance to go to the game, it was totally crazy.
We bought seats in the more tranquil section, where people actually sit down, but from where you are you can see the "fan's section". They are out of control. Walking in, there were crowd control police officers on horses, helicopters flying around, and Choripan (delicious spicy sausage sold in a roll) being sold on the side. Everyone was singing, yelling, and getting excited for the game. The energy was... heavier than a sporting event in the states. I knew it was about to be a battle, rather than a game.
The roudy fans were throwing toilet paper constantly, throwing small hand bombs at the police who were decked out in riot gear and had shields. The songs they were singing were hilarious and awesome, I regret not having learned a couple before I went. Moreover, there were flags draped all the way down the section, and banners across the section. At one point, they let the biggest flag I have ever seen fall over the entire section of people. Where did they find a flag so large? It covered the entire section, and it was unreal. It was really fun, and so cool to see.

They tied.