What ?
The witness stated the 6 foot 1 football player was slamming
George’s head into the cement !
Would you allow yourself to be beaten to death just to not upset the riled youth !
Have you ever been MUGGED !
Have you ever been MUGGED !
Just maybe, the 6'1 football player thought Zimmerman was planning to mug him, and was going back for reinforcements. Maybe he thought that his best chance would be to attack Zimmerman before those reinforcements arrived. We don't know the whole story here, and, sadly, we will never know Martin's side of it.