A mugger briefly beats up a man in an alley.
A Joker shoots a machine gun at several cars, and a man is shot in the head with gory blood spatter.
Batman gets into a fight with a large group of Jokers on a rooftop. One Joker gets hit in the eye with a beatarang (blood seen), and three more fall and hit the ground, and violently die.
The bat plane crashes into the street, and some blood is seen on Batman's suit.
Alfre'ds naked corpse is seen.
Aquaman is seen being killed by a mob of Jokers on a screen.
There's a large, bloody final battle as the heroes fight the Jokers' Batman and Nghtwing fight several, and blood issues seen. Many Jokers are graphically killed in bloody ways, Nightwing rips one's head off, Green Lantern shoots several, Superman kills many with his heat vision and smashes another. Lots of bloody violence and chaos.
