Cainhoy

The South Carolina civil disturbances of 1876 were a series of race riots and civil unrest related to the Democratic Party's political campaign to take back control from Republicans of the state legislature and governor's office through their paramilitary Red Shirts division. Part of their plan was to disrupt Republican political activity and suppress black voting, particularly in counties where populations of whites and blacks were close to equal. Former Confederate general Martin W. Gary's "Plan of the Campaign of 1876" gives the details of planned actions to accomplish this.

The following incidents took place mostly in counties where blacks were in the majority, but not significantly. The Upstate counties had majorities of whites and racial disturbances were uncommon, whereas the Lowcountry counties had an overwhelming black population. White militias were not so active there. In the Midlands, Edgefield District and Charleston area, Democrats exerted considerable effort to step up the Democratic vote and suppress black Republican voting by intimidation and violence, including outright murder and assassination of a black state representative.

In 1875 Charleston had a population that was 57% black, with a Charleston County population that was 73% black. Having had a tradition of a well-established class of free people of color in the city, African Americans organized to defend themselves during this volatile period.

By suppressing the black majority in Edgefield County and election fraud (2,000 more votes were counted than the total number of registered voters in the county), the Democrats elected Wade Hampton III as the Democratic candidate by a narrow margin of slightly more than 1100 votes statewide. They also carried the state legislature.

...
Wikipedia