Maybe they should have used smaller stones?
http://rt.com/usa/news/king-chinese-monument-mlk-241/-snip
Edward Jackson Jr, executive architect behind the monument, added to the Post that the memorial’s sculptor, Lei Yixin, wasn’t chosen over money issues but because of his talent and capabilities. “Not only did we need an artist, we needed someone with the means and methods of putting those large stones together,” Jackson said. “We don’t do this in America. We don’t handle stones of this size.”
Some critics believe that the job could have been done domestically, and that by using materials from the hometown of Martin King or having more from the legion of unemployed Americans working towards completing the monument would have been more appropriate than outsourcing