The victim was an unwilling participant in the fight if reports are to be believed.

According to what I read the attacker had already sucker punched him several times.

And I suspect that if the victim gained the upper hand then he would have been set upon anyway.

The attacker's brother is already in prison for murder; the two are infamous members of a gang that specialises in extortion etc.

I can't stand when people punch others repeatedly in the head when they are already unconscious.

He's looking at 20 years.

I invoke my right under the 5th amendment of the United States constitution and decline to answer the question.