Posting as an objective reader and not a Junker...
As I see it, it stands like this..
An admin (a fair and neutral one) should decide if brining a gun into a courtroom was even possible or not, did it happen?
Simple as that..
If it happened, Sarawr!? is correct in that the Lib Government has a right (and is justified) in responding in kind. They could arrest the individual (Thus making the player say rename his ships to a different persona or something, IDK)put a bounty on him, destroy him on site etc... or Hold the Congress responsible for the action. It's up to them.
If the event did not happen, or if the person who made the post had no right to do so in the first place, then the event never happened and you should proceed from there.
This is Kinda what the Admins are here for, arbitrating differences of opinions in RP so... Did the even happen or not?