There's nods, some of them more certain than others.
From Sophie Roper: "We should all go together. So it's a bigger complaint. And we shouldn't ever go back to that class even if they try to take away points - my da's a union man, you gotta stick together for strikes to work."
From one of the Hufflepuff boys, more hesitantly: "I mean, he was out of line, but we don't really know he's a Death Eater..."
From another Hufflepuff girl, voice like steel, "He is. No one's supposed to know, 'cause all the Death Eater trials were closed, and a bunch of them were exonerated and those ones' names didn't get published anywhere. But my aunt's head of Law Enforcement, and she warned me he'd - had some really strong evidence against him. But that the Ministry cleared him so no one could legally do anything."
There's uneasy glances. From Mandy - a Ravenclaw - "Our Houses are, like, half muggleborn, aren't they? Lavender - she's in Gryffindor - said he was basically decent to them except for yelling at Longbottom, but their section only had three muggleborns... And - I dunno much about that yet, but didn't Death Eaters kill muggleborns?"
From Lisa, more quietly: "There's only one muggleborn in Slytherin this year - Morag. She said he hasn't been mean to her face, but all but two of her housemates are picking on her, and he won't do anything..."
"We," says Sophie, voice intense, "Are getting him fired."