Is there a law against following someone? If so, please cite it.
He was told to cease and desist.
At which time he was returning to his truck or had already reached his truck.
No he wasn't. He was told "OK, you don't need to do that".
See the difference?
So far, nobody really knows what happened in this case and you are certainly entitled to your own opinion. But as the saying goes, you are not entitled to your own facts.
It does not matter what he was “told” because it is not illegal to walk in one’s neighborhood watching to see what someone you do not recognize is doing.He was attacked BTW when he was returning to his truck and jumped from behind.The confrontation was started by the one who got shot.