In 2002, Ali was given a star on the Hollywood walk of fame. However, his is the only one to have THIS UNIQUE CHARACTERISTIC about it. (edited at 4:10 pm, June 4, 2016 (EDT))
Original question: In 2002, Ali was given a star on the Hollywood walk of fame. However, his is the only to have THIS UNIQUE CHARACTERISTIC about it.
It is placed vertically on a wall (so that no one could walk on the name Muhammed, as per his request)