LAWRENCE, Mass. --Civil War buffs, outdoorsmen and police officers all claimed victory in the creation of a citywide knife ban that was softened to accommodate historical exhibits and re-enactments and some recreational and occupational uses. Under the new rule, which will take effect April 20, machetes, sabers, swords, knives, ice picks and other similar weapons with 2.5-inch or longer blades capable of penetrating a police officer's vest are banned in Lawrence. However such weapons used in fishing, hunting, performing arts and job- or historical-related activities are allowed. "Flag staff tips to bayonets to sabers is really the lifeblood (of the...