I live in the Arlington diocese and have been following this for a while.  In today's Washington Post, there is the behind the scenes article by Maria Santos Bier, the woman who "discovered" this mattter.  This is the link: https://www.washingtonpost.com/outlook/how-i-discovered-my-childhood-priest-was-in-the-ku-klux-klan/2017/08/25/c8ff3ff4-88e6-11e7-961d-2f373b3977ee_story.html?utm_term=.39c68fe89427&wpisrc=nl_buzz&wpmm=1#comments

Anyone who knows me from my posts, knows that I am not an apologist for the Roman Catholic Church; however, I have real difficulty with how see exposed this. She explains in the Post article that she had been one of his parishioneers.  As I stated to her, why didn't she contact him first before approaching the diocese?  Wouldn't basic charity call for her to contact him directly?