[faktorialas]

People that are politically interesting (for states and others) have obvious reasons to protect their privacy. You need politically interesting people to fight for your rights.

You want to protect your privacy so that in the event that you become politically interesting, they don't have a backlog of your data. Furthermore, you want to protect your data to not be dissuaded from any (even subtle) actions that you might take if you weren't affected by a chilling effect.

You want any person who hasn't been previously cognizant of the dangers of privacy to not have that hang over his head, in case he becomes politically interesting (even not on purpose, like could be the case with whistleblowers), or become politically interesting, like an activist, journalist, etc. Any free society needs this. To do this, everyone needs to have privacy.

Finally, even for the first group to have privacy, everyone has to have it. It's not something you can just give to specific people.

I'm assuming you know that there are plenty bad things can be done with data, if someone is willing. I hope that's evident. Not mentioning what criminals could do with it, or how corporations can abuse people with it. As they routinely do.