CNN)When John Haygood, a 10-year-old boy with autism, was arrested last week at a school in Florida, he kept repeating that he didn't know what was happening, as seen in shaky cellphone video taken by his mother. "I don't know what's going on. I don't understand," he cried out. In the video, his hands are cuffed as two officers escort him to the back seat of a police car. His mother, Luanne Haygood, followed behind them while recording the incident on her phone. In the video, John appears distraught, and yells some profanities. Luanne is heard in the video speaking...