I went to the game with my Broncos shirt on. I was harassed, called Napoleon Dynamite, asked if I came from the Castro District (gay neighborhood) cell-phone nearly stolen, hair ruffled, cups thrown, and laughed at, but nothing violent.
There was a huge fist fight in front of me at the end of the 4th quarter. Two cops came to break it up, and people started hitting the cops. 4 more cops showed up and they started throwing punches too, it was a mess that lasted 3 minutes. I put my jacket on and left it on until the time ran out.
After the game, in the parking lot, I hung out with some ghetto raiders fans. I gave them beer and they gave me hamburgers, and we had a nice after-game tailgate. They didn't have any hard feelings, and I don't think they expected their team to win.
Also, the last penalty was Unsportsmanlike Conduct against the Raiders, and the fans cheered harder than they had all game.