Darth Vader comes to life every Purim. For a night at least little folks dress up and imagine that they are the good like Esther, the bad like Haman, and the ugly like Ahashveros. And during the Purim service those folk have the opportunity to act out (in a controlled environment) the definition of the characters they have chosen to be.
They are only playing, but they are also preparing for the realities of life. Through play they learn that by a different name the likes of Haman, Esther, Mordecai, Ahashveros exist in every generation. The spirit of Luke Skywalker and Darth Vader is always among us.
The festival of Purim, however, gives us reason to hope that one day we can vanquish evil and that every day we have the ability to confront and battle evil. The story of Purim takes us to a bad place but allows us to find our way out of that place. The Megilla tells the tale of a people who refused to accept his or her fate; who recognized that every person has the opportunity to create his/her own future.
Indeed Purim and most holidays in Jewish and Western tradition focus on man's ability to learn from the past in order to mold his future. Those holidays emphasize that evil does not just go away; we must do something to make that happen.
Purim, however, is special. In the levity that the day brings we affirm our belief that in the end good will triumph over evil. In the end every Darth Vader and Haman will be defeated.