I was one of the many disappointed people in Miami who bought tickets to see the Keith Haring exhibit, only to have all but 10 pieces removed. I don't know whose fault it was, or why it was an issue - but, one thing I'm pretty sure of is Keith Haring is turning in his grave because people are being cheated out of seeing his beautiful artwork.
http://www.miamiherald.com/2013/03/08/3275287/realor-notlegal-drama-over-art.html
The few authenticated pieces: