When playing with the Wild West Show expansion and Dorothy Rage is in play, can you force a player to play a Bang against themselves (or any other card where the effect can be applied to another player, distance-based or otherwise)?
From a post by the designer of Bang!, Emiliano Sciarra:
... you cannot play Bang! on yourself ...
Also, this official ruling from the FAQ for the Wild West Show expansion
The action you describe must be possible for the player
By combination of these two rulings, Dorothy Rage cannot force a player to play a self-targeting "Bang!".