During the DC Future State comic books, we learned about A-Day - something big that happened in Gotham that kicked off the anti-mask feeling in Gotham,
Infinite Frontier #0
And there was no doubt that this was the work of the Joker, poison gas bombs planted during The Joker War that went off at a pre-arranged time months later. But in
The Joker #3, we get the confrontation already…
Guillem March and Tamra Bonvillain
And the very strong feeling that The Joker is telling the truth. About this one at least. Still a mass murderer, obviously.
Guillem March and Tamra Bonvillain
But whose interest is it to pin the mass murder of Arkham Asylum on the Joker and profit from it? Maybe someone wanting to stoke fear into Gotham while simultaneously removing many threats to Gotham, put a target on the Joker s head and use the new security measures in Gotham to go after all the remaining masks?