1984 by George Orwell.

Why is doublethink so important to the Party’s survival?

Doublethink is crucial to the Party's control of Oceania, because it enables the Party to alter historical records and pass off these distorted accounts as authentic. The brainwashed populace no longer recognizes contradictions.

no,

explanation:

because they are likely to use their corrupted thought process to get what they want. not what is better for the another reason they shouldn't is since they abused their rights as a us citizen they should have certain rights stripped away from them as punishment, such as the right to vote. due to the lack of proper behavior exemplified   from their actions , it would be hard for people to trust them because of their criminal record.   either directly (in the case of a referendum or ballot initiative) or indirectly (by choosing lawmakers and law enforcers). in fact, we do have certain minimum, objective standards of responsibility and commitment to our laws that we require people to meet before they are given a role in the solemn enterprise of self-government. people who have committed serious crimes against their fellow citizens don’t meet those standards. and those crimes can include such “non-violent felonies” as, say, treason and espionage, or voter fraud and public corruption, white-collar crime and felonies merely “concerning drugs” — like trafficking in fentanyl-laced heroin and selling it to minors, for example. if you’re not willing to follow the law, then you should not have a role in making the law for everyone else.