Hank,

So there is no issue regarding "why" Zimmerman was getting his head bashed?

So far there has been "probable cause" that a crime occurred. Zimmerman was arrested and charged with Murder 2. Zimmerman will be tried for Murder 2. Zimmerman's bashed head is one piece of evidence that may, or may not, indicate he murdered Martin.

(I am not a judge, lawyer, or cop, but I watched all 3 on TV.)