Historian Eric Foner observed:
In effect, the Klan was a military force serving the interests of the Democratic party, the planter class, and all those who desired restoration of white supremacy. Its purposes were political, but political in the broadest sense, for it sought to affect power relations, both public and private, throughout Southern society. It aimed to reverse the interlocking changes sweeping over the South during Reconstruction: to destroy the Republican party's infrastructure, undermine the Reconstruction state, reestablish control of the black labor force, and restore racial subordination in every aspect of Southern life. To that end they worked to curb the education, economic advancement, voting rights, and right to keep and bear arms of blacks. The Ku Klux Klan soon spread into nearly every southern state, launching a “reign of terror against Republican leaders both black and white. Those political leaders assassinated during the campaign included Arkansas Congressman James M. Hinds, three members of the South Carolina legislature, and several men who served in constitutional conventions.”
Klan members adopted masks and robes that hid their identities and added to the drama of their night rides, their chosen time for attacks. Many of them operated in small towns and rural areas where people otherwise knew each other's faces, and sometimes still recognized the attackers. “The kind of thing that men are afraid or ashamed to do openly, and by day, they accomplish secretly, masked, and at night.” With this method both the high and the low could be attacked. The Ku Klux Klan night riders “sometimes claimed to be ghosts of Confederate soldiers so, as they claimed, to frighten superstitious blacks. Few freedmen took such nonsense seriously.” The Klan attacked black members of the Loyal Leagues and intimidated southern Republicans and Freedmen's Bureau workers. When they killed black political leaders, they also took heads of families, along with the leaders of churches and community groups, because these people had many roles in society. Agents of the Freedmen's Bureau reported weekly assaults and murders of blacks. “Armed guerrilla warfare killed thousands of Negroes; political riots were staged; their causes or occasions were always obscure, their results always certain: ten to one hundred times as many Negroes were killed as whites.” Masked men shot into houses and burned them, sometimes with the occupants still inside. They drove successful black farmers off their land. “Generally, it can be reported that in North and South Carolina, in 18 months ending in June 1867, there were 197 murders and 548 cases of aggravated assault.
Klan violence worked to suppress black voting. More than 2,000 persons were killed, wounded and otherwise injured in Louisiana within a few weeks prior to the Presidential election of November 1868. Although St. Landry Parish had a registered Republican majority of 1,071, after the murders, no Republicans voted in the fall elections. White Democrats cast the full vote of the parish for Grant's opponent. The KKK killed and wounded more than 200 black Republicans, hunting and chasing them through the woods. Thirteen captives were taken from jail and shot; a half-buried pile of 25 bodies was found in the woods. The KKK made people vote Democratic and gave them certificates of the fact.In the April 1868 Georgia gubernatorial election, Columbia County cast 1,222 votes for Republican Rufus Bullock. By the November presidential election, however, Klan intimidation led to suppression of the Republican vote and only one person voted for Ulysses S. Grant. Klansmen killed more than 150 African Americans in a county in Florida, and hundreds more in other counties. Freedmen's Bureau records provided a detailed recounting of Klansmen's beatings and murders of freedmen and their white allies
More here. (Note: At least one daily post throughout February will be devoted to African American History Month)