Respuesta :
They conflicted with the fifteenth amendment to the united states constitution which prohibits the federal and state governemtns from denying citizens the right to vote based on that citizens race color or previous condition of servitude.
Civil Rights activists challenged Southern voting laws because they conflicted with the Jim Crow laws. The Jim Crow laws came about in the 1870's to make sure African Americans were separate, or segregated, from white people. They said that blacks and whites were to be separate, but equal. Although indirectly, they basically barred blacks from voting in elections.