Is it black enough?

Why is it that everyone expects black art to be about people? I mean art depicting people. I guess the folk who buy and sell black art can't tell if is really black art unless there are black people in it. So why must there be so much emphsis on the race/culture thing? Is there a black tradition that artist must pay tribute to everytime paint hits the canvas? Yes we have the importance of roots but eventually fruit is important also. I just don't want to be accused of not being black enough or being too black, neither of which expresses who I am.