You are also under no obligation to "yield the road", before using deadly force, as long as you have a legal right to be there, and feel in fear of serious harm.

Again, it is not a question of "justifying escape", it is a question of when should police use deadly force.

Should police should shoot any criminal that runs?  How about any criminal that resists?  If someone is seen selling some weed on a street corner, and police approach, and the person starts to run around the corner, should police shoot?  It seem reasonable that the severity of police response should depend on the seveity of the crime.