You only gave scenario's here:
Give three examples of an acceptable KOS and its scenario:
Me kills and calls KOS on Jimjam because he saw him going inside the Traitor room.
Me calls KOS on Jordz because he saw him walking past an Unidentified body that he just killed.
Jordz calls KOS on Jimjam when he attempted to kill me near the Tower in the map ttt_minecraft_b5
Give two examples of unacceptable KOS and their scenarios:
Jimjam called KOS on Derek when he saw him with a crowbar near a player.
Me called KOS on Derek when he pulled out his shotgun.
Also, traitors and detectives can also RDM. (looking at where you explained RDM)