He was leaving before the cops got there. When they came on the scene he was leaving as instructed. Had they let him leave there would be no story.
Once they committed battery they were the criminals. You keep ignoring those facts.
At what point did they commit a battery? Did you read the penal code statute?
Are you a law student?
Please answer the question.
Where did you get your legal training? Did you get a law degree out of a box of cracker jacks?