Hello! I PKd you because you ran over a cop, and killed him, before being killed by another cop. In the clip you provided in the sit, you can quite literally hear the cop open fire on your car and kill you at 9 seconds in. The reason it shows your ID in the clip is because when the cop opened fire on your vehicle, he caused it to explode, making the system believe you killed yourself. However, that was not the case, as logs display the cop doing 20 damage to you at the exact same time you blew up. You stare at him on the ground for a good solid 2 seconds, before reversing over him. Just because someone else is breaking the rules, does not exempt you from any consequences during your attempt to be a vigilante. I asked another member of UA if they agree that this is a valid PK, and they also agreed with me.
I see your intentions and understand where you're coming from, however the right thing to do was to call staff. I checked your combat logs, and saw that the cop had shot and killed you (also identifiable by the glock shooting in the background as your car blows up). It's impossible for me to believe that you didn't see the cop as he was literally a foot away from you, which is the ultimate reason I PKd you.