BLOOD.

Is it wickedness?
Is it weakness?
You decide
Are we gonna live or die?

[Kendrick Lamar]
So I was takin' a walk the other day, and I seen a woman—a blind woman—pacin' up and down the sidewalk
She seemed to be a bit frustrated, as if she had dropped somethin' and havin' a hard time findin' it
So after watchin' her struggle for a while, I decide to go over and lend a helping hand, you know?
Hello, ma'am, can I be of any assistance? It seems to me that you have lost something. I would like to help you find it
She replied: Oh yes, you have lost something. You've lost your life

Is it wickedness?

Lamar stated his views on police brutality with that line in the song, quote: And we hate the popo, wanna kill us in the street fo' sho'
Oh please, ugh, I don't like it