Sometimes, we bring these tragedies upon ourselves.
Arthur went head over heels right over the rail and the bridge. His wand fell from his pocket, clattering and sliding along the ground until Lucius' foot came down gently upon it, stopping its course.
There was no sound of a splash below so Lucius accioed Arthur's wand into his hand and quickly pocketed it while making his way over to the side.
Arthur's hand still clutched the edge of the bridge as he dangled over the black waters.
"Hey, Weasley," Lucius said in an exact imitation of Arthur's tone. Anti-apparition wards went up, Lucius' wand firmly in his hand.
"I don't know what you were going to say next, so I may as well continue our delightful conversation." It was nearly past midnight. There were no muggle automobiles in the road at this point. All was dead silent save for their voices and the water sloshing against the towers of the bridge.
"Do you remember that day, Weasley? When you took something from me that I can never get back? I keep going over it, you see. Whenever you hit me. Whenever you call me a name. Whenever you try to disgrace me. I keep thinking of that day."
An incendio curse could be used on Arthur's hand, just on his fingers. "And I wonder if you know how much it bothers me having your hands on me again. How much you think you can or should get away with after that day. Noble Gryffindor that you are, you probably don't even waste your time thinking of such things." Gray eyes narrowed. "Do you enjoy reminding me of that day when your hands were on me? That every time afterwards brings up such memories. I suppose I should be grateful that there are others who are now willing to step between us or try to separate us. But back in Hogwarts, I didn't have such protection."
He cocked his head to the side. "Do you remember?"
Lucius wasn't quite sure when the lines started to blur between death to Order members and personal vengeance.