Mario Tama/Getty Images(LOS ANGELES) -- An armed man accused of impersonating a U.S. Marshal was taken into custody at a Robert Kennedy Jr. campaign event in Los Angeles on Friday afternoon, according to the Los Angeles Police Department. A spokesperson from the LAPD said in a statement to ABC News that a radio call was generated around 4:30 p.m. local time reporting a man with "a loaded gun in a shoulder holster and a badge stating he was a U.S. Marshal." LAPD officers arrived shortly after and arrested the man. The FBI was also present at the scene. The LAPD said the man never bra...