As a grandson of the Confederacy, unreconstructed Southerner and diligent cynic of the Federal (Yankee) government, consider the following comments as input for the original question.
June 1865, ~75% of the population (black & white) living in north Alabama and middle Tennessee were listed by the authorities as existing in a state of starvation.
The was nothing left, either of value or edible. Both sides had "foraged" the countryside into oblivion.
The failure of the Northern Country (states north of the M/D line) to handle the situation in a humane fashion was evident. Rather, the radical republicans saw this as their opportunity to "re-colonize" Dixie and make it a state in the mold of how they saw things ought to be.
Gen. Forrest formed the KKK predecessor at Pulaski, Tennessee largely in response to the execution of his men (as they surrendered) by the Federal garrison commander as spies. As much like the (original) IRA in Ireland was formed as a quasi-law enforcement entity to combat the results of English oppression, the KKK later morphed into something much different than the original article.
Many, many courthouse records such as deeds, abstracts, etc. somehow caught fire resulting in the dispossessing of many landowners of their property.
Gun control laws. Where do you think they originated? Yep, it was a product of "reconstruction" and (initially) applicable to the Confederate States of America. Even the National Rifle Association (1871) was a product of the War of Northern Aggression as retired Federal officers formed it to encourage/teach civilian marksmanship in light of the dismal overall field performance of the Federal troops during the (first) Revolution of 1861-1865.
Time may alleviate the rancor and animosity which is still present in the Occupied States (CSA) among it's citizens. Heck, it's only been 800 years and the Irish and English are already engaged in dialogue.