"In contrast to the contemporary black Americans, the black Americans, in that era, were in solid support of the Republican Party. This was the party that fought the northern and southern Democrats to pass the Thirteenth and Fourteenth Amendments to the U.S. Constitution. Although President Andrew Johnson tried to bamboozle Frederick Douglass to the Democrat side by making false or empty promises, he did not succeed. Douglass was no fool and was not going to let Johnson use him to gain the support of the Negroes in his effort to be 'elected' president. Frederick Douglass and other prominent Blacks threw their support to Ulysses S. Grant for president."
January 1, 1970
https://en.wikiquote.org/wiki/Frederick_Douglass