Here is a little reading stuff for you about the civilians in Sirius:
"A non-Military or non-police pilot in Sirius. Just a regular person. "Civilian" refers to a person who uses the Civilian ID, or a class of ships and equipment that are available and sold to all people.
Everyone starts out with the Civilian ID. You are considered to be a civilian of the House that your ship is from, unless otherwise stated or roleplayed. Many News Reporters like to use the Civilian ID."
That means I can just as easily have been a civilian from Planet Crete, as from every other house.
I was AFK most of the time, but me not responding to you and your fellow corsairs messages like: "What are you doing here!? Answer".. "This is corsair space, get out of our territory" does not give you permission to kill a civilian.
Nevertheless, you killed a Cvilian ID CSV vessel on rank 19 in your cruiser. You broke the rule and got punished.