The 42-year-old rapper Killer Mike, of Run The Jewels, and the 75-year-old funk legend George Clinton, founder of Parliament and Funkadelic, may be from different generations, but it turns out they have a few things in common: They've both created music that seemed commercially risky at first, yet ended up transcending genres and creating a new audience. And they both embrace music as a force for social change. It also turns out they've both owned barbershops — and that's no coincidence. Both men say the businesses allowed them the financial freedom to take creative risks.