The police didn't tell Zimmerman not to follow. My God, you didn't even read the whole article. If someone is following me and then stops and walks away and minds his own business and is walking towards his car and I thought he was dangerous, would I punch him from behind and attack him? No. Would you? Whether you would or not, it's still a crime to do so, because it's not self-defense. You're attacking someone who is doing nothing illegal to you or to anyone. Zimmerman was going back to his car