Why?

Being African-American myself, I ask the question, "Why can't some black people get along with each other?"
Our ancestors came from Africa with nothing, suffer racial treatment, and fought for our right to be free.
Now that we are somewhat free, we want to kill each other, steal from each, and gossip about each other.
We are also teaching our children to do the same, but they are worser than we are.
If you look at them a certain way or step on their shoes by mistake, they want to mess with you.
Why people?