I'm sorry... there are just so many things wrong with this.
A pastor, and the instant he felt threatened, he has no issue with opening fire and killing someone in church, during service, with innocents nearby. What about "Thou shalt not kill" ? Can you say "hypocrite" ?
The guy had a brick. Big deal. Is everyone so unable to defend themselves that they can't duck a brick? If it's throw, it's slow moving, you have time to move out of it's way. Once the brick is out of his hand, he's unarmed. If he is in striking range, it's heavy to wield and easy to duck. The first reaction is retaliation with a gun? Not even close to being justified in my mind.