Three 18-year-olds have been charged with first-degree murder in the fatal shooting of longtime sports radio personality Jimmy Dodds, whose death has shaken the Kansas City, Kansas, community and renewed concerns about youth violence. Dodds, 64, was killed Sunday outside his home in the 3000 block of 82nd Terrace in Kansas City, Kansas. Known to generations of listeners as “Uncle Jimmy,” Dodds built a following through his work in sports talk ra…