Some 9er 'fans' put a pic on their facebook page that somebody posted to Twitter. They were all in 9er gear with 9er bandana hiding their faces. One of them had a gun in his hand. The text next to the photo said: "Seacock fans, we missed you at Pier 39, but we'll find you at the game. The tool with the gun had the barrel pointed at his buddies back.
Not sure if the whole thing was just a gag with maybe a toy gun, but it was done in poor enough taste that I hope they have to answer for it in some fashion. Somebody already re-tweeted the pic to @SFPD, but not sure if they'll do much about it.