What if Superman wakes up one day, and decides he's gonna Destroy All Evil?
Why not? He's the Sole Remaining Superpower and the Champion of Truth, Justice & The American Way.
So he goes and smashes a dictatorship. BAM! Nobody does it like The Superman does it!
The people are grateful.
But Supes --- he won't go home.
He figures, the people he liberated aren't ready to take care of their stuff. So he's gonna do it.
And he's standing there, thinking, and this car comes toward him. He shouts "STOP!" in his super-voice but they don't stop, so he zaps it with his heat vision, in self defense. It's not HIS fault if they don't speak English!!!
Some old guy starts complaining about the dead people in the car. Superman knows people understand that he means well and mistakes just happen.
Since Superman smashed the dictator's electricity plants, it gets all dark and stuff but that's o.k. Anyone out after dark is probably a lawbreaker and he hits them hard. SPLAT! The people should feel safer now.
The place starts to smell bad. Superman remembers that he broke the water system while he was fighting the dictator. There's Shit All Over - what is wrong with these people ????!!!!
The people over here are hard to tell apart. They've got mustaches and don't wear super suits with their hero ID on the chest, so sometimes Superman's not sure who's with him and who's against him.
Then someone told Superman that the guy on the next street had kryptonite, so Superman blew up the whole block in self-defense. Boy were the neighbors mad at Superman! They told Superman the informant was helping the evil General Zod. Now Superman is confused, but he sure can't leave while people are all mad at him.
After a while, the people decide they need help.
Who else can they turn to but Lex Luthor? Lex is a very bad man but what else can they do?
Superman keeps trying to "help". He won't leave so long as there's a single liberated person seeking help from the evil Lex Luthor.
Now what is Superman gonna do?