Baha'is take help of Mohammad Reza Shah's dream to prove that he was a Shi'i ruler who persecuted Baha'is for their beliefs!

The Shah’s degree of belief in Shi’ism can also be seen clearly in this speech:

I was stricken with typhoid fever, and at the height of the illness, I dreamed of Imam Ali one night … He gave me a cup containing a liquid to drink, and I did that, and my health improved… In the summer, when we were going to visit the Shrine of Emamzadeh Davood, I fell off the horse. During the fall, I saw the image of Abbas ibn Ali, who took my hand and protected me… I also saw a picture of the 12th imam in the summer palace.

http://iranpresswatch.org/post/16394/a-paradise-for-murderers/