A basic law in physics says that energy cannot be created or destroyed. It can only be changed from one form to another. The same rule, I think, applies to society. There is a given amount of human energy. Is it going to be directed creatively? Or destructively? We see both at play in the life and death of rapper Nipsey Hussle. Hussle was a born entrepreneur. According to a newspaper account, it's what earned him his nickname. He was polishing shoes at age 11 to earn money. Then began his music. And then he moved into investments. And then,...