why are they locked? who locked them? should I lock all my files? how to unlock all my files? how do I find each locked item to unlocked them? yes, I'm very angry with some features I find on my mac, every day.
Generally items that are locked by default should be locked so they are not unintentinally changed To open a locked item, "Get Info" (cmd-i) and click the padlock to open, you'll be asked to enter your admin password and it will unlock.
What are you trying to unlock and why would you want all files unlocked?