And that's it, then. His anger spills over entirely, overwhelming him, white-hot and unrelenting. He doesn't drop his wand--a wizard never drops his wand--but he shoves it blindly into his pocket as he goes for Snape with a sound that's very nearly a growl--

It's been easy to avoid thinking of his family, it's been easy to distance himself, because no one knows them. No one hears the surname Black and makes those automatic connections that Sirius was once so used to--and hearing Snape say Bellatrix's name careens him back to that place, to being a kid who hates his family, hates them and anything to do with them, deliberate in never being like them or thinking of them--and here's Snape, throwing them back in his face again. And James is gone, and that's enough for Sirius to want to end this now, brutally, in a way that will shut Snape up.

And so he shoves his wand into his pocket and he goes for Snape, practically tackling him, shoving him back against the floor with one fist gripping at his shirtfront, the other pulling back to punch him in the face again--and then again, heedless of the ache in his hand--