Knife Rights win in NYC
Story here. I gather that NYC outlaws carrying knives with blades 4" or longer, and also any lock back knife that can be opened by flipping. In this case they arrested someone for carrying a knife that had no lock, and which could only be flipped open if its blade was first half-unfolded. NYC eventually dropped charges, and the owner sued and won.
Via Instapundit, who makes a good suggestion: next time go for an injunction as well as damages.