Marx and Engels were both soon troubled by the actions of Andrew Johnson, the new president. On 15 July 1865, Engels wrote to his friend attacking Johnson: “His hatred of Negroes comes out more and more violently . . . If things go on like this, in six months all the old villains of secession will be sitting in Congress at Washington. Without colored suffrage, nothing whatever can be done there.” Radical Republicans soon came to the same conclusion.

https://jacobin.com/2012/08/lincoln-and-marx

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