[jessduntno]

“Not on my property he don’t.”

He wasn’t on someone elses property, he was responding to a report that made it the scene of a suspected crime, which gave him the right to be there. But you knew that. Or don’t cops have a right to go to a scene of a reported crime?

[Prodigal Son]

he was responding to a report that made it the scene of a suspected crime, which gave him the right to be there

And when does it stop being a suspected crime scene? Seriously. By the policeman's own admission he was already finished and was on his way out of the house. Therefore he was no longer investigating a crime. He had not been investigating a crime from the moment he ascertained that Gates was the legal resident.

He wasn’t on someone elses property,

Yes. He was. And that somebody has rights. And they don't stop having rights just because Johnny Law shows up at the door.