The government owes.
Republicans authored an amendment to officially make slavery a constitutionally protected activity. The Republican Party is the party of The Corwin Amendment that would have cemented slavery as a constitutional right.
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.
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. When blacks got Civil Rights, the Republican Party did not believe that was civil or right and decided that extremism in defense of liberty was no vice. In 1964 the Republican Party turned its back on blacks after nearly 100 years of black support.
Republicans need to stop lying.