ABERDEEN, Wash. -- The mother of a 3-year-old boy is furious that a man wasn't arrested after he allegedly assaulted the child at an Aberdeen playground. The suspect is developmentally disabled, and prosecutors say that presents a challenging legal issue. Three-year-old Matthew Svoboda was playing at the park Tuesday when things got ugly. The boy's family claims a 27-year-old man started attacking the child without warning. "He pulled him off that with one arm and then he started hitting him, either with a closed fist or an open hand," said Matthew's brother, Toby Svoboda. The boy's mother, Isabel Svoboda, watched...