Minor Threat was only the million and oneth punk band to cover "Stepping Stone." By the time they got around to it, this essentially goofy song had been turned into an overly earnest punk protest song, to which overly earnest undersexed punks shook their fists in a million mosh pits across the US.
Another great song for punk covers is "Sometimes Good Guys Don't Wear White," originally by the Standells. Minor Threat did a good cover of that one, too. In fact, if you believed Google you'd think Ian came up with those words about being a lovelorn working stiff himself.