You sell something dishonestly - that means you conquer the resources of your neighbor. Those, you came with a weapon. And the sword does not always look like a long knife, it can be anything that does not benefit a person.

Have you seen the movie "The Drunkest State"? It is based on real events... One of the main characters, a bootlegger, drowned. He gave diy whiskey, sold alcohol - and drowned...