I know the history of those who died for the rights for me to survive
Kendrick is referring the inevitable argument that many people had to struggle and/or die in order for us to have equal rights today and that should somehow mandate our political involvement today. He knows the history, but doesn’t feel he should be obliged to participate in a system he doesn’t believe in.
In the context of this verse and his not wanting to vote, he’s likely referring to the suffrage movements of African Americans and women for equal voting rights, which eventually culminated in the Fifteenth Amendment
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