American Idol finalist Caleb Kennedy has issued a public apology after a controversial social media post that he filmed resurfaced online.The short video clip, which was initially posted on Snapchat, shows Kennedy sitting next to and filming someone wearing what appears to be a Ku Klux Klan hood.As the Herald-Journal reports, Kennedy’s family claim that the video was recorded when Kennedy was 12.Kennedy, who is now 16, confirmed his exit from American Idol in a statement posted on his Instagram