There are other Black people in the games than barret. Rude,
theres a guy in the gym in wall market, a woman at costa del sol.
Mr Coates, loads of different people.
and Yuffie looks more asian than the rest of Avalanche who look caucasian (cept Barret and Nanaki).
I think they sorta saw Barret and Dyne as there leaders so they blamed them unfairly, especially as he lost his wife and best friend and was left with a baby to raise by himself. poor ole Barret had a right tough time