I don't understand the question.
You mean the "suspicious activities" of an unarmed teenager walking home from the store on the phone with his girlfriend? Or all of George's variations in his story after he hung up with NEN?
If the former, we have only George's story as to what Trayvon was doing. If the latter, we have only George's story as to what happened (we have George with a need to cover his butt as well).
It bears repeating; either way, at the end of the day, George shot and killed an unarmed teenager, for what certainly appears to be no reason (no, there was no violent, life-threatening attack by Trayvon).
George's supporters are desperate to spin this story in any way to make George's use of deadly force seem justified. Hence the "severe, multiple injures" they say he sustained.