[seowulf]

Why is that on the list?

That was my question as well. It could be that Mill justified an empire if it was benevolent and well meaning (the British Empire, e.g.), if it brought classical liberalism to the backward civilizations of the world. I don't necessarily think it's such a terrible thing to export freedom to enslaved societies, even if it takes a little imperialism.

[inquest]

It could be that Mill justified an empire if it was benevolent and well meaning (the British Empire, e.g.), if it brought classical liberalism to the backward civilizations of the world.

That's odd. I could see condemning that if it were a liberal's list of harmful books. But for conservative scholars to react that way? Tough for me to visualize. (I'm not saying you're wrong, though)

[Aquinasfan]

It could be that Mill justified an empire if it was benevolent and well meaning

I would put him on the list for his philosophical Utilitarianism and Nominalism, which laid the groundwork for our society's intellectual and moral relativism. The roots of Modernism go all the way back to Occam's proto-nominalism.