Those criteria are too loose. If a person calls out to you, "I'm going to encroach on your property with my fingers interlocked behind my head," and you're saying, "No, I would really prefer that you didn't," and they do it anyway...then they have not done anything to deserve death. That's draconian strictness.

It's different if they attempt to attack you, or any number of other possible situations, but those criteria are too loose.