The related videos to the OP gives another example from Miami Vice, though not as weird as the Magnum P.I. one, which is hard to top.
[yt]https://www.youtube.com/watch?v=yTSJ0s1A20s&spfreload=10[/yt]
Crockett is clearly implied in dialog and actions to have murdered an unarmed Hackman in revenge for killing his pregnant wife (played by Sheena Easton in a big stretch as a pop singer, hence the rather incongruous pop song that accompanies Sonny's walk-off). Crockett went on an Archer-style RAMPAGE after finding out about the pregnancy, which she didn't get a chance to tell him before she was shot and fell into in his arms. Pretty standard good guy crossing the line and committing murder when it's personal and the bad guy is really really bad trope, like the other Magnum P.I. clip posted above.
What makes it weird is that NBC's censors wouldn't allow Crockett to straight up murder the guy out of revenge, so they demanded a reshoot where it's revealed that Hackman actually had a gun in his hand out of nowhere as Sonny walks away, thus justifying the revenge killing but taking away from a huge dramatic moment in Crockett's development as a character, showing him as a broken man willing to compromise his ethics for revenge.
It was a precursor of the Greedo edit in the Special Editions.