Hi, I'm the staff member who handled this ban - Firstly, I'm sorry you feel your ban was unjust, and I'm hoping I can make it more clear as to why I had ruled this way.
NITRP: In terms of this clause of your ban, your PTSD roleplay is something you are welcome to build into your character, in terms of casual roleplay moments such as speech, mannerisms, and talking points, I think it could provide a really interesting character for others to interact with. The reason this fell short for you, is due to 1. your lack of truly bringing that character into your interactions with others, and 2. due to it only really existing to justify your shootouts with the police. The 4 officers who I dealt with had individually reported you over a course of time for PK tickets, but due to the time these weren't able to be handled. Every time you were hospitalized (killed) you would return again and engage in the exact same behavior, but none of these other players were aware or supportive of your PTSD roleplay as a reason to be shooting them. This leads me to look at character rules 11 and 12, as well as how your gameplay is preventing these other players from achieving the RP they are looking for when they play PD. When I eventually took the ticket "I have a question for staff" (Or similar) and they explained the situation, I felt it was the correct course of action to follow up rather than let this cycle continue, and leave a sizeable group of players unable to enjoy the server.
11. You may not have a minge/non-serious character for 'messing around'
12. You may not have a character for the express purpose of mugging/raiding
RDM & Cop Bait: If you were to read through the Killing Rules again (which can be found alongside plenty of other server rules on the link provided) there are a few clauses that go against your killing reason.
15. In the same vein there are still times when you can't shoot police and it would be considered RDM. You may not KOS Police for no reason.
18. Generally you shouldn't invite conflict then try to hide behind the rules when you're killed. This can also be considered baiting as described under killing rule 6. Intentionally instigating someone or goad them into breaking a rule.
There are no rules or mentions in the Killing Rules that support PTSD as a reason to engage in conflict with the police, especially without any prior interaction or RP, even with your characters past in the PD whitelist.
Hopefully that highlights the key reasons why I decided on your ban!