The parents of a Georgia first-grader with autism are speaking out after their son was suspended for biting his sandwich into the shape of a gun and pointing it at a classmate during lunch, arguing that the school’s strict disciplinary policies fail to account for his developmental disabilities. John Medina, 6, was suspended last March while in first grade at Sarah Harp Elementary School in Fayette County, south of Atlanta. He was diagnosed with level 1 autism at age 4 and later diagnosed with ADHD, conditions his parents say can make it difficult for him to understand social norms. In an interview…