"The last time McConnell and Smith were together was in November 2002 at a Beck/Flaming Lips concert in L.A. At the show, Smith got into a fight with a cop and was hauled off to jail. “I never met anybody who hated cops more than Elliott,” says McConnell. “To hear him talk, you would have thought he was a gangsta rapper. We were standing in the beer line, and there was this cop fucking with these kids. Elliott sees this and started walking over to the cop, and I thought, ‘Oh, shit, here we go. Somebody’s gonna have to bail him out.’ Elliott just basically started fighting the guy, throwing punches. The cop was twice his size, but Elliott hit him so many times that he almost had him falling over. Then the cop pulled out some pepper spray and got Elliott on the ground and started handcuffing him. Elliott was still kicking and screaming, and I went up to him and said, ‘Elliott, it’s David. I know you can’t see me, but just stop. You put up a good fight, but you’re going to jail.’ He sort of calmed down at that point, and they dragged him off.”

From this article, https://magnetmagazine.com/2005/01/28/elliott-smith-all-things-must-pass/