Listening to the hp audio drama (courtesy of the seven seas) and listened to Draco and Harry's first meet
And the Draco and James parallels are even more striking. We've talked to death about the "I think I'd leave, wouldn't you?" parallels for Hufflepuff and Slytherin... but nobody's mentioned the fact that both James and Draco talk about "the wrong/right sort".
Draco talks shit about muggleborns who didn't know about the magical world until they got their letters for Hogwarts, and Harry takes offence because that's what happened to him.
And James talks shit about Slytherins, which Sirius takes offence to because his family all were from that House- as well as Severus, of course, because that's the House he wanted to go to, but the "wrong sort" parallel matches Sirius a little more because James' response to that information is "i thought you were alright".
And of course, there's the classism in both James and Draco's behaviour: Draco's more blatant with the blood purity/"old families" comment, James' in the way he treats Severus Vs Sirius (Sirius, rich, from old money is treated with a little more respect despite actually being from a family known to be connected to Slytherin House and dark magic, while Severus, who is so visibly poor it's drawn to our attention, is completely mocked despite there being no confirmation that he would actually be in there and the only reason he wants to be there seems to be for "brains").
At least Draco was trying to be friendly with Harry when he was being a little shit. Openly bigoted, yes, but he wasn't actually out bullying Harry but rather just sharing gossip (and I do genuinely believe the only reason Harry got offended about the remarks about Hagrid was due to his friendship with Hagrid- because Harry's just as much of a judge lil prick, see: every description of Snape ever).
James was just bullying Severus on sight.