Police with dogs and riot gear confronted a rock-throwing crowd of 200 fishermen angry at a renegade seafood auction house they say will undermine their strike in New Bedford, Mass., the nation's most profitable fishing port. Fifteen people were arrested. As buyers drove up to purchase fish caught by non-striking crews, the crowd began pelting cars with stones, police said. Several windows were broken, but no injuries were reported. Fishermen claimed no union fishermen had been to sea.