It's not the government, it's the department of justice. To name two: protection of witnesses, protection of state secrets ("the people" is not a person who can keep secrets).

To protect innocent people for examples, or to not reveal some secrets.

It's up to us to keep the government accountable. Democracy does if we don't put pressure on the government and participate actively in politics.

The TL;DR:

- To protect victims

- Redact people that are currently under investigation

But here they are clearly blacking out potential co-conspirators, without them being under investigation or having been charged with anything.

Seems like they are just backing out powerful people not to embarrass or implicate them.

Because some are allegations without proof, and some are names of people who are victims. They have a right to privacy

Because the redaction was only supposed to protect the victims.