Gunfire erupted at Colorado's annual 420 Rally—the first since the state voted to legalize cannabis least year—injuring two people and scattering a crowd of thousands in Denver's Civic Center Park. A man and woman were shot in the leg, and a third grazed with a bullet. Both victims are in their 20s. They were taken to Denver Health Medical Center. Police asked attendees for possible photo or video footage of the shootings, and had no immediate motive. Witnesses described a jovial scene quickly turning to panic. Some thought firecrackers were going off, until a man fell bleeding, his dog also shot.