A retired police officer who took the stand to defend George Floyd killer Derek Chauvin is the latest to publicly back Trump in a campaign ad — the content of which was pulled apart in a fact-check Monday. Scott Creighton told the jury that convicted Chauvin of the 2020 killing how he’d arrested Floyd less than a year before, and described him as ‘uncompliant” — a claim that was not backed up by body-cam footage that shows Floyd shouting “Don’t shoot me, man!” and Creighton cursing at him. In the campaign ad released by the pro-Trump Preserve America PAC last week, Creighton describes having t…