WASHINGTON - A five-year-old child was shot and killed in Minnesota by a teen waho was filming a social-media video with friends, police said. The shooting happened Thursday on what normally is a festive Thanksgiving Day, but which also saw another five-year-old die in a gun incident near Atlanta, while a man in a Philadelphia suburb died when struck by a stray bullet during Thanksgiving dinner.  In the Minnesota incident, the five-year-old boy was in a house where several teens were making a video, police said in a Facebook post. When a 13-year-old fired a gun, the young child was struck and killed.  Police in the Brooklyn Park suburb said their initial investigation found the shooting to be accidental but added that the 13-year-old had been arrested and was being held at a juvenile detention center. Neither the victim nor the teen was identified. Separately, another five-year-old died in a shooting accident in the Atlanta suburb of South Fulton.