Lincoln was, indeed, a white supremacist. In his 1858 debate with Sen. Steven Douglas, Lincoln maintained, And inasmuch as they cannot so live, while they do remain together there must be the position of superior and inferior, and I as much as any other man am in favor of having the superior position assigned to the white race.
So were Davis, Lee, Jackson and any other Southern leader you care to mention. You must really hate them, right?