[Gbro]

I agree that this is a justifiable shoot(given what we know). However it certainly could have gone south for him. I teach that one can do everything right and loose when they fight.
There certainly is no statute that takes away our ability to do the right thing when intervening in a crime like this and given that there had been several previous crimes VERY recently at this same location has to have helped.
I think the biggest thing to take away from this is we are seeing a positive shift in the legal system towards defending ourselves and others and that this is an isolated situation and in another place and or time this could go very badly for the Good Samaritan.