Why does the party take time to reindoctrinate its criminals if they will eventually be killed in 1984?

In George Orwell's 1984, the party reindoctrinates criminals to ensure total control over their thoughts and beliefs, even at the point of execution. This process serves to reinforce the party's ideology and eliminate any potential dissent or rebellion, demonstrating its power over individuals. By breaking down the prisoners and reshaping their minds, the party seeks to maintain an atmosphere of fear and compliance, ensuring that even in death, the individuals pose no threat to its absolute authority. Ultimately, it reflects the party's obsession with power and the eradication of any independent thought.