The problem is he only kills assholes in this movie
His murders come off as over the top karma.
He spares good people lol. Literally if you were nice to him he didn't kill you.
They should have had the guts to show him truly monstrous. Murray should have been a sympathetic father figure instead of an asshole who just wanted to mock Arthur on national tv.
He should have been killing people who weren't assholes. This Joker is a murderous Santa Clause you better be nice.
Travis Bickle only killed "bad" dudes, is he a great guy?