When Davis says, "If I'd been there sooner, he might still be alive," Davis wasn't just putting on airs. If he'd finished the job sooner, he wouldn't have had to murder the cop who saw him at the crime scene.
Okay, at the end of the first movie, Harry gets rid of his badge and is clearly not a cop anymore. However, in the sequel, he is still a cop working in the force, as though nothing had ever happened. Would someone like to explain that?
Magnum Force opens with Harry on loan to Stakeout, so maybe he was demoted as a result of his actions during the first film. Or for losing his badge.
He actually just threw his badge away as a sign, he didn't do this by the book and felt he wasn't a cop anymore.
