Just a complete random question, but deserves some thought. Personally, I would go back to 1789 when the Constitution was written and tell the drafters to eliminate slavery early by getting rid of the 3/5ths Act.
And BTW, you can't kill a person, so don't kill Hitler or Kim Jong Un, even though they were / are awful people, they still have human dignity and deserve some degree of respect. (Though I don't condone the actions of either.)
A good debate is not judged by bias, but in the context of the debate, where objectivity is key and rationale prevalent.