Niggas kill for pennies, I'd rather slay the coppers
Play on words here. Poor people fight each other over money, he would rather fight the authorities he feels keeps all of them in their circumstances. Coppers being a term for cops, and also the metal used to make pennies. He is flippin' the phrase to say he would rather get rid of the things that make us feel we need to fight and stuggle to survive.
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