This race issue was fabricated by the left wing MSM. The same way they make the Clinton family look like the black community's best friend (while in reality they've done nothing of substance to help them). 

Rapper Killer Mike (don't let the name fool you, Mike is very well versed in US politics) is a prominent Bernie supporter, and in the primaries, he made it his mission to expose the media fabrication of the Clinton's being the "savior" of the black community. Link:

https://www.youtube.com/watch?v=4G4RFH2Qo1E