Trump posted some sort of a video which portrayed him as the king of the jungle and the Obama as apes. A strong response to this obvious manifestation of racism was not slow in coming; for once, it included prominent Republicans as well as Democrats. The administration responded first by defending the video, then by removing it, and finally by blaming an unnamed staff member.
Trump, of course, never apologized, because he views apologies as a form of weakness. In other words, Trump means never having to say you’re sorry.