On a recent Saturday morning, a halberd-toting Roberts gathered with other coalition members in Waikiki's sprawling Kapiolani Park. A few carried samurai swords. One had a butterfly knife " also known as a balisong, prominent in martial arts in the Philippines, where many Hawaii residents have roots. A wooden, Scottish sword dangled from the waist of a man in a red kilt. Honolulu police officers, who got wind of their plans to march through Waikiki in celebration of the law, chatted with them. Roberts told one he got his halberd blade on Amazon for $56. With officers escorting them, they strolled along Waikiki's main oceanfront drag, Kalakaua Avenue.