The director also included a link to Leto’s “We live in a society” t-shirts on his band 30 Seconds to Mars’ online store.
Half of the profits made from the t-shirt sales will benefit the American Foundation of Suicide Prevention, in memory of Zack’s daughter Autumn.
She had tragically died by suicide during production on Justice League, which the director dropped out of so he could be with his family.
The Snyder Cut deleted scene takes place in the Knightmare future and begins with Batman confronting The Joker.
The Dark Knight says: “Y’know, it’s funny. He would talk about people who would die in my arms.
“Because when I killed Harley Quinn and she was bleeding and dying, she begged me with her last breath, that when I killed you – and make no mistake I will f***ing kill you – that I do it slow.
“I’m going to honour that promise.” Batman then snatched a Joker card out of his nemesis’ hand. He added: “Maybe this will come in handy.”
Speaking with Wonder Meg around the Justice League Snyder Cut’s release, Zack shared why the “We live in a society’ moment was left out of his version of the movie.
The 55-year-old said: “Yes there was a version of that. What I was trying to do was a second for the black and white version of the movie – for the charity version of the movie – there’s a second ending of the movie, of the Jared Leto scene, that included that line.
“The truth is, it’s an either-or moment. When Batman gives the Harley Quinn speech, you either go ‘We live in a society,’ or we do what we did in the movie.
“And I just thought, the society thing is cool, and maybe one day we’ll all see it, but I also did very much like the broken, the tricked, the vulnerable Joker that you see in the movie.”
Zack continued: “So it’s a trade-off of not getting the vulnerable Joker, you get the line… which is cool, and I like it.”.
Fans have reacted extremely positively to the deleted scene in the comments, with many using the hashtag #RestoreTheSnyderVerse.
Who knows, maybe the story Zack had planned beyond this epilogue can manifest one day on HBO Max.
Everyone struggling with mental health can call for confidential support the Samaritans in the UK on 116 123 or visit a local Samaritans branch.
We Live In A Society T-Shirts are available here.