Columbus Ohio Police(COLUMBUS, Ohio) — An Ohio man has been arrested after he was caught on surveillance footage whipping his 3-year-old son dozens of times with an extension cord and then leaving him alone in the car while he went shopping with the mother and his three other children. Robert Lee Slocum, 27, turned himself into Columbus Police from a church less than 24 hours after the authorities released video of him committing the brutal beating of his son, according to ABC’s affiliate station in Columbus, WSYX-TV. “He saw the…