The casting of a presumed white actor in the role of Aang ( as well as a primarily Caucasian cast ) in the Asian-influenced `` Avatar '' universe triggered negative reactions from some fans , marked by accusations of racism , a letter-writing campaign , and a protest outside of a Philadelphia casting call for movie extras .
The casting of a white actor in the role of Aang ( as well as a primarily Caucasian cast ) in the Asian-influenced `` Avatar '' universe triggered negative reactions from some fans marked by accusations of racism , a letter-writing campaign , and a protest outside of a Philadelphia casting call for movie extras .