Hans,
I'm not quite sure what you mean by Adler putting 'the dark side' in perspective. Could you please elaborate on this.
Adler did not make a sharp distinction between conscious and unconscious, nor did he assume internal conflicting forces. He did not believe that everyone had a hidden dark side. Consequently, his model of the personality does not include anything similar to Jung's 'shadow' or Freud's 'Id'.
Adler's conceptions of the unity and self consistency of the personality suggest that any 'dark side' is an invention of the individual--a devise that may be useful in the pursuit of an aggressive or defensive goal.