It's gonna take more than keywords to win the debate.
Probably D'Souza himself. When you don't have a leg to stand on, start throwing out off subject statements. What yanks refuse to understand is the factual evidence of his actions and words. You can cut and paste parts of his speeches to defend the belief that lincoln actually cared, but when put into context with the entire speech or separate speeches, not to mention his actions and the war carried out on private citizens with his consent, it's clear to most that he never did care about what we are told.