Lots of jobs are being cut or put on hold because of this. Them people that likes to knock on doors to sell stuff or perhaps your friendly UPS/Fed ex guys are no longer knocking on people's doors.
They need to ratify them laws about stand your ground or rights to protect yourself on your property because as you can see, there are still many people are ill informed about the situation. Perhaps make them think before you shoot because if they do not know about the consequences, they may not see themselves in jail so therefore, they shoot in thinking that the law is still on their side.
When we were younger, we played negro knock. Knock on stranger doors and run. The world was more tolerable back in them days. The world sure have changed.