Hunger Strike

Help!! I am perplexed with my 3 year old.  She is turning into Sybil.  One minute she can be this sweet, almost angelic little girl and the next minute turns into a surprisingly good imitation of Carrie Fischer in the Exorcist.  Her latest antic, which has been going on 2 weeks, includes a hunger strike at daycare, where she refuses snack, lunch, and anything to drink.  I have no idea what she could be protesting about at her age.  Maybe she is taking her own stance on the OccupyMN movement.  I am completely puzzled about her behavior so any ideas or suggestions would be more than welcomed!!