Jesus was Jewish. Even so, different cultures and ethnicities have often portrayed Jesus and others from the Bible as being from their group. Sometimes this is done to symbolize the fact that Jesus came for all the nations of the world.
[See also: 6 of the Oldest Images of Our Lord Jesus Christ]
Since Christianity for many centuries was based largely in Europe, these important characters of salvation history have often been depicted as white Europeans. This is fine, but other cultures have also depicted them according to their own appearances.
Here are 14 examples of depictions of Jesus as a black man: