CathyInBlue
Tool Maker
If TM were on top of GZ bashing GZ's head into the concrete while GZ knew himself to be armed, then it is entirely appropriate for GZ to defend himself with lethal force.
If you're being assaulted by a person who is largely unarmed (the question of the concrete as a deadly weapon not being addressed here), but whose assault you cannot escape and which seems likely, at the very least, to render you unconscious, then you can assume that after falling unconscious, anything else can be done to you by your assailant: Rape (not likely in this case, just sayin'), further physical injury, or nothing. In GZ's case, there's the added knowledge that should TM render him unconscious (or dead), TM could then search his body and find his sidearm, with which he would then be free to commit mayhem at will. Being that GZ believed TM to be a street punk and criminal, it's even more unsurprising that he would choose to prevent himself (by whatever means) from being rendered unconscious or killed (by whatever means) and TM then obtaining his sidearm.
If you're being assaulted by a person who is largely unarmed (the question of the concrete as a deadly weapon not being addressed here), but whose assault you cannot escape and which seems likely, at the very least, to render you unconscious, then you can assume that after falling unconscious, anything else can be done to you by your assailant: Rape (not likely in this case, just sayin'), further physical injury, or nothing. In GZ's case, there's the added knowledge that should TM render him unconscious (or dead), TM could then search his body and find his sidearm, with which he would then be free to commit mayhem at will. Being that GZ believed TM to be a street punk and criminal, it's even more unsurprising that he would choose to prevent himself (by whatever means) from being rendered unconscious or killed (by whatever means) and TM then obtaining his sidearm.