Other than not fear mongering you should mention that the 15th amendment was largely ignored in the old Conferate South. There was actual voter intimidation. Blacks were physically prevented from registering by the counties. They were given citizenship tests nobody could pass.
Nothing much changed until Lyndon Johnson signed the Voting Rights bill of 1965. Federal troops, Federal Marshals and law suits were filed to get blacks registered to vote. With the law on their side, anyone that wants to vote, can.