But those weapons don't have the same highly political negative associations as guns do. Knives are tools more than weapons; bombs can kill a lot of people (see the 2013 Boston Marathon attack or IEDs in Afghanistan), but their typical stylization is also very cartoonish and there isn't an NRA for bombs; swords are archaic and mostly shown as medieval or pirate weapons; and bows and arrows as weapons are also archaic, and they're only used today for hunting.