What effect did Reconstruction have on race relations and the conditions of blacks after the civil war?

Reconstruction aimed to improve race relations and conditions for black people by granting them rights and citizenship. However, Reconstruction efforts were eventually undermined by the rise of segregation, discrimination, and violence perpetrated by white supremacist groups like the Ku Klux Klan, leading to the establishment of Jim Crow laws and the continuation of systemic racism in the United States.