No, it just wasn't democrats.
Republicans authored an amendment to officially make slavery a constitutionally protected activity. The Republican Partyis the party of The Corwin Amendment that would have cemented slaveryas a constitutional right.
Rutherford Hayes, a Republican president, with the support of the Republican Party, ended reconstruction. The Republican Party is the party of the 1877 Compromise that ended reconstruction and paved the way for Jim Crow. Plessy v Ferguson was a 7-2 vote in favor of segregation, 4 of the 7 votes were Republican.
Once blacks got a foothold in the Republican party and gained some semblance of political equality, white Republicans took steps to purge blacks from leadership positions. The Republican Party is the party of the Lily White movement, a group of Republicans who worked to purge blacks from the party.
Republicans consistently broke promises or ignored issues that affected black people. In 1964, the Republican Party turned its back on blacks after nearly one hundred years of black support.
A Democrat sgned our second Emancipation Proclamation in 1964. A Democrat signed the Voting Rights Act. The Democrats nominated and supported the candidacy of the first black president, and have supported the only black vice president. I'm tired of dumb whites like you whining about racism when blacks point out what whites have done while posting all kinds of racist comments about black people.