Brucie Wayne accidentally killing the joker
This happens before Red Hood is revealed as Jason, but after he shows up. Bruce is at a gala and has been very stressed lately, which is why he was so caught off guard with the Joker arriving. A big thing about today? It’s Jason’s adoption day anniversary. Bruce is barely clinging to being good.
However, Joker has a new laughing gas that he thought would make everyone fall into a catatonic state of laughter, striking a blow against all of Gotham’s elite.
That’s what he thought it would do.
Instead, it lowered inhibitions and increased their emotions. It also reduced their ability to think things through. Doing this to Bruce, who is stressed with Red Hood making moves and Justice League stuff getting more stressful and it being the anniversary of the day he could finally welcome his beautiful boy into the family, only to be face to face with the reason he lost his kid?
It only takes one comment about the old Robin for Bruce to go feral.
He isn’t thinking things through, isn’t focused on how hard he is hitting things, or where they are moving until he’s on a balcony with the Joker, and he’s distantly aware he’s been screaming about the clown having done enough-
Everyone watches, spellbound, as Brucie Wayne, under the influence of this new gas, pitches both the Joker and himself off the balcony, twenty stories above the ground.
Red Hood catches Brucie Wayne.
No one catches the Joker.
The morning papers scream about how the Joker died from Gotham’s prince being drugged, and how the city’s new crime lord kidnapped Brucie before he could die.
Everyone in Gotham is in disarray.
Dick is panicking after seeing the headline. (He was in Bludhaven.)
Tim is cursing himself. (He was home sick with the flu.)
Jason is struggling with his emotions.
Alfred is loading his shot gun.