"...Chases burglar out of his house. Once the burglar is out of the house, there is no longer an imminent threat...

5) Burglar turns and looks like he's going for a gun. Man takes one swing with bat at burglar..."

A good defense attorney could probably make a case for the homeowner attempting to make a citizens arrest on the BG for burgulary, the BG made a move causing the homeowner to believe that his life was in danger, so he defended himself. But then, the DA could come up with a pretty good story himself. The come those 12 peers...
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OBG