The legal situation in the US re violence and protection of self and property.
[1.] In all states, you can use deadly force to defend yourself against death, serious bodily injury (which can include broken bones and perhaps even lost teeth), rape, or kidnapping, so long as (a) your fear is reasonable and (b) the danger is imminent.
[2.] In basically all states, you can use nondeadly force to defend your property—and if the thief or vandal responds by threatening you with death or great bodily harm, you can then protect yourself with deadly force.
And in some states, you don’t even need to expose yourself to such increased risk, if you reasonably fear at the outset that nondeadly protection of property would be too dangerous. In those states, to quote the Model Penal Code formulation (which some have adopted), deadly force can be used [under various circumstances].
There was a long delay before this came up as a post so it is in the open thread in case it did not appear here.