A Miami Martin Luther King Jr. Day celebration was interrupted by gunfire that injured eight people, including five juveniles. An 11-year-old and a 13-year-old were grazed by bullets and were treated on the scene, the Miami Herald reported. Five other injured people were stable in the hospital. Another victim was in critical condition after suffering several gunshot wounds. Police said they recovered two firearms and took two people into custody for questioning, but not suspects were identified on Tuesday night.