[zincwarrior]

Ah, now I see. When I say self defense - that's covered under the self defense statutes, it's defense of yourself or others typically for reasonable fear of death or some level of harm. This also typically includes preventing a rape or kidnapping, but may include other actions. Now some jurisdictions permit lethal force in defense of property which may be covered under other statutes (in Texas it is covered by the same statute).

In Texas, coming to the defense of a police officer would fall under the self defense statutes. I am not aware of any other statute permitting lethal force by a non deputized citizen (now the wife says there is a "he needed Killin your honor" provision for annoyed wives...)

Apologies if I was unclear earlier.