-support
You know damn well you killed me because you put that KOS sign behind me, it was just a convenient excuse to use your poorly worded KOS sign.
If you really did want to kill me for the original "KOS on property" it wouldn't make sense to put up another KOS sign at the fence and then kill me, you would've just killed me for entering the "property" wouldn't you? Your excuse doesn't make sense, just accept the warn.
Also you missed the part where your KOS signs must be clear and concise. You did not specify what your property was and as Corky said any reasonable person would assume you mean inside your actual base.