I don't think so. First of all, depression and anxiety are mostly personal psychological issues, unless a person is in a dire situation. And I don't think, categorically, so many black people are in dire situations that they are largely suffering from fear and/or horror enough to warrant anxiety or, presumably, unnatural depression, which, I guess, would be something like PTSD.
As far as stress is concerned- I have no idea. But you'd think there would be medical statistics somewhere to justify an answer on that.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.