"Hon. William H. Seward, Sir, Your note of the 11th was not recd until the 21st. It was read with some surprise, and with more regret, to say nothing of other sentiments. The note is marked “private.” I decline the confidence. Both your notes came into my hands fairly without my having authorized any implication of privacy. And although I may not think it proper or any longer feel disposed, to use the one to Mr South in the particular manner I had desired to do, I shall nevertheless, since you are a public man, feel at perfect liberty to use both of them in any other manner, however public, as evidence of your unfaithfulness to freedom, and your own convictions of the true character of the constitution, which you have sworn to support. And if in so doing, I shall chance to “embarrass” the plans of the Chases, and Summers, and Wilsons, and Hales, and the other jesuitical leaders of the Republican party, who profess that they can aid liberty, without injuring slavery; who imagine that they can even be champions of freedom at the north, and at the same time avowedly protect slavery in the south, “where it is”; and that they can thus ride into power on the two horses of Liberty and Slavery – if I should happen to “embarrass” these plans, I shall not feel that that consequence is one which I need to care to “avoid.” I had had some hope that you would put you foot on these double-faced demagogues, and either extinguish them, or compel them to conduct, for the time being, as if they were honest men. But it seems that you have decided rather to throw yourself into their arms, commit your fortunes to the keeping and do nothing on behalf of liberty, that may “embarrass” their operations...I shall very likely make the whole of this correspondence public; and if it shall serve any purpose towards defeating yourself and the Republicans, I shall be gratified; for I would much rather the government be in the hands of declared enemies of liberty, than in those of treacherous friends."
That statement is by Lysander Spooner on January 22, 1860, who was probably the FURTHEST away from a racist of any man in America at that time. Seward had written him seeking his support for the Republican Party in the 1860 election.