19-year-old man charged with firing the stray bullet that struck and killed 11-year-old Takiya Holmes was beaten by a Cook County Jail inmate while awaiting his bond hearing at a county courthouse.The beating was captured on video and released Thursday by the Cook County Sheriff's Office.The surveillance video captured an inmate approaching a dozing Antwan Jones while he was handcuffed to a chair in street clothes before his bond hearing Wednesday at the Leighton Criminal Courthouse on murder charges in Holmes' shooting death.