Is that REALLY a wide spread view?
I think the artistic history of Jesus' visage is being continued for convenience more than for a political or social message.
I don't know if many Christians individually believe that the "white washed" Byzantine or Roman interpretation of Christ is literal. At a pretty young age I knew that the art depicting Jesus was not the same as a picture from Rembrant or Stuart. I knew that the art was coming centuries after Jesus was alive (or rumored to have been alive).
When a theater director or artist changes Jesus' image dramatically, such as hiring a black actor, I think there is a general sensationalism created by media and by the mob because its contrary to what everyone has been accustomed to, I'm not sure its because at an individual level anyone really thinks the customary portrail was accurate.