In 1984 George Owell Why does the Party bother to brainwash its prisoners before killing them?

The Party in Orwell's 1984 aims to maintain absolute control over its subjects, so by brainwashing prisoners before executing them, it ensures they stay loyal and do not pose any threat even in their last moments. It also serves as a demonstration of power and instills fear in the rest of the population, discouraging any thoughts of rebellion.