Also from the video, one of the agents is definiately limping after the Pastor's car backs up and wheels around.
I believe the pastor thought he was being robbed and tried to get away. The agents did not know that he was a pastor and thought he had backed over one of them in an attempt to flee and so opened fire.
RIP Pastor, God keep your soul and comfort your family, your wife and unborn child. What a horrible mistake and set of circumstances.
There is not one shred of evidence he was involved in drug activity much less had done ANYTHING illegal.