Lincoln belongs to the days when foreigners admired America and saw it as a source of hope. By going along with mass-mobilisation, alas, he destroyed the world he seemed to embody and transferred power from those who admitted they regarded other people as property to those who pretended they didn't and treated them like shit. That said, 'states' rights' that include slavery needed to be destroyed, and with all his hesitation, he did it well. He was, I'd guess, the last 'official' American who clearly stood for human decency, and that's not to be sniifed at.
He arrested the entire state gov't of Maryland and deposed the gov't of Kentucky, placing a relative in charge as a military dictator. He ordered Gen. Sherman to go raping an pillaging and wiping out American cities. He openly called for the conquest of Africa and the deportation of all black to America's African empire. He openly advanced white supremacy in his political speeches. I could go on but I think you get my drift.