Leadership definitely is an important aspect, but it's also one of those chicken vs egg things.

What sells more: gangsta rap or Blackalicious? Blackalicious is a phenomenal example of excellent role models (at least lyrically), yet they're not nearly as popular gangsta rap.

It took a great leader in MLK to rally his community and shift opinion, but it also took a whole lot of white folk with a whole lot of power to shift policy. The thing is that it's not done yet. We need another MLK, more protests, and a whole lot of white people with a whole lot of power putting the money where it matters