Final answer:
Abram Colby was targeted by the KKK for refusing a bribe to vote for the Democrats. The KKK's overarching objective was to reestablish white supremacy in the South.
Step-by-step explanation:
Abram Colby, a formerly enslaved individual, was targeted by the Ku Klux Klan (KKK) because he refused a bribe to vote for the Democrats. As a result, the KKK attacked him by breaking into his house, dragging him into the woods, and beating him for several hours. Colby described the composition of individuals within the KKK as including a local lawyer, a local doctor, and several farmers.
The overarching objective or ultimate aim of the KKK, based on the given document analysis, was to reestablish white supremacy in the South after the Civil War. The KKK used intimidation, violence, and acts of terror to suppress African Americans and their white supporters, preventing them from exercising their rights and maintaining the pre-war social order.