The police have already said they CAN’T arrest him because they have no probable cause. The police observed Zimmerman’s injuries corroborating his story of self-defense, which fits what the 911 calls and the sworn statements by witnesses have said. The gun had a full magazine and no bullet in the chamber which means that something stopped the next bullet from loading, suggesting that there was another hand on the gun besides that of the shooter.
The Martin family is claiming that the police report is fabricated and the witnesses have all been tampered with. They are alleging a vast conspiracy to cover up the truth.
But then again, they claim that the surveillance video from when Zimmerman was brought in to the police station for questioning is the “icing on the cake” to prove that Zimmerman had no head injury - even though it is clear that he’s got a gash on the back of his head.
Or, remember the weapon was Kel-Tec brand which is not known for its functional reliability! Also, "bullets" don't load by themselves. A round (or a cartridge) is chambered.
What is the big question about this surveillance video is why was there no blood on Zimmerman's jacket? It is my opinion that an answer may be that officers did not want a blood-soaked shirt to soil their police car seating. So, they took the blood-soaked shirt, and sealed it in an evidence bag. Since Zimmerman's SUV was nearby, a handy extra jacket was inside for him to wear. That is the jacket we see him wearing in the video. It is a coincidence that both were the color red.
As for the gash on the back of his head and no evidence of a bleeding broken nose in the video, it was said that first aid was used to stop the bleeding. There would be no evidence of bleeding in the video because it was stopped with the first aid. Also,the video did not show much detail to see evidence of a wound on the back of his head. If it was high definition video, we would have seen evidence of the wound and perhaps an inflamed nose. We also must remember that Zimmerman moved off the sidewalk onto the grass where those violent bashings of his head received the softer blows of grass. He would have become a severely brain-damaged victim if he hadn't. Also, he would have been incapable of gaining control of the gun that Martin had struggled with him to get. IMHO.