They wouldn't really gain anything from killing, as a matter of fact it would be counter productive since people would gather against them because of it. They want total control over people and they want to break people physically and spiritually. Through torture they would eventually get the person to break and this would be good because they wouldn't be against the state anymore.
The freed men's Bureau did redistribute large amounts of land to freedmen in some areas from wealthy southern planters and from abandoned plantations. Southern planters began to return and demand their land back, and vey few republicans wanted to live where the government could arbitrarily confiscate land from people, so much of the land was given back to its original owners
It gave people a desire to live in a more morally peaceful society.
Brunelleschi solve his problem with the dome of the Florence Cathedral by employing sets of diagonal ribs based on the pointed arch and he also created many layers of support within the dome. The answer in this question is by employing sets of diagonal ribs based on the pointed arch.
