Are white people less likely to watch a film where the main characters/majority of characters aren't white?

I ask this question as a big blockbuster film has been made (the last airbender) which has been influenced and based on an east asian cartoon. The major characters are all caucasian (whites with indians and middle eastern's as the bad guys) with no east asians in the film. Obviously the film producers have done this to make the film appeal to a wider (i.e. european) audience but my question is if the film had only cast east asians as the major characters (like it is in the film) would this deter you from watching it..