WaPO doesn’t appear to be trying to promulgate this story.
https://www.washingtonpost.com/news/politics/wp/2017/02/10/no-donald-trumps-father-didnt-create-racist-ads-for-a-mayoral-bid/?utm_term=.581ed700277a
IOW, OOOP!Our bad! But that’s OK enough schmucks will believe this fake story as Gospel.