I understand your point but disagree.
Do we know that no one in the neighborhood ever followed a stranger before? I don't think we do. So therefore we cannot say "no one else misunderstood."
Frustration at the police arriving too late other times makes GZ's actions quite proper to me. "They always get away through the back gate." And if he had followed TM and police had arrived...the police would not have arrested GZ for "stalking" or "getting out of his car"...would they?
No,. So really that is IMO overblown.
The shooting did not occur, IMO, because of GZ following TM. It occured because GZ was being beaten. A man in pain, nose broken, being pummeled...usually has STOPPING THE BEATING as his priority. The shooting occured to stop the beating.
GZ did have an official capacity in the Neighborhood Watch. This was HIS neighborhood. He has rights too.
Do we now think that we have to hide in our cars or homes and hope police can hurry over fast enough. People in that condo area were under seige. It's sad that those Thugs created the distrust and fear that GZ felt toward a stranger/teenager. But that is NOT racism.