An Okhlahoma cop is facing an internal investigation over a Facebook post following the assassination attempt on Donald Trump. Lieutenant Darin Ehrenreich, head of the Tulsa Police Department’s Special Victims Unit, posted to Facebook using an account under a different name, according to KOKI-TV. The post in question was a song lyric hinting at the assassination attempt made on Trump while he spoke at a rally in Butler, Pennsylvania, on Saturday. In the post, Ehrenreich expressed that he was reminded of a song lyric along the lines of “Well, it could have been a better shot.” “On its face, I w…