There were people he would need to speak with about this, as if this became something more difficult or more egregious, there would be documented precedence. "I'm guessing, from what you're suggesting, that this was in front of your friend. Public?" Remus needed as many details as Draco would provide; he wouldn't simply let this slide. He knew Draco's little gang had barely slipped from the clutches of a cell after the war.