support of total transparency of evidence logged into the public record
   for all to see forever -- including, say, child pornography?

   That's a silly thing to mention, but yes.  We need to know what is
   true, very badly.  It's also clearly helpful if pedophiles can get
   arousal from old court evidence rather than incentivising criminal
   production of new material.

   Y'know, I thought about this more, not something I'm used to
   considering, and children and parents definitely need to be able to
   decide what is hidden in situations like that, obviously.  I wasn't
   thinking of the subjects of photos still being living children.  It
   makes one think of people's ability to take things off the internet,
   too.
   There's also some value around publicising things temporarily in a
   ritual way, like a viewing of a coffin at a funeral.  Then everyone is
   respectful.
   Pretty different topic than government secrets, though.