My Answer: Along with his novels, Mckay's poetry had great impact on the Renaissance as well. His most famous and influential poem, If We Must Die, gained a great deal of attention and reassured his stand in the Harlem Renaissance. It was a strong and agressive piece on the way blacks were being treated, calling out the white men as dogs. He pushes towards the idea of fighting and standing up for their rights, saying "if we must die, oh, let us nobly die."
Hope I helped! :D