Have you been living under a rock or something? What was the mob doing? What weren't they doing! It's Gotham. They controlled the criminal underworld and laundered millions of dollars. I think your just trolling at this point. Who doesn't know what the mob does. Go watch The Sopranos and GTFOH.
Give me a scene that shows any of this, we have no clue what their business
What is the criminal underworld? Were their into drug trade, human trafficking, what was it batman was trying to unfold, never explained
batman shows up in the beginning of the movie, for no reason, it's never explained what they were doing in that parking structure
the next batman shows up, he's getting lau from hong kong, because they moved there money their, but we have no idea how they got this money and how it relates to crime, it's just a random event
Why would I have to watch the Soprano's to know what another movie suppose to entail
in the 89 Batman we know why Batman beat up the thugs at the beginning, they mugged a person while he was on his normal patrol return, that's the introduction to the character in his everyday existence
we we are introduced to jack napier and crissom tells him to go to axis chemicals to get rid off the books that can link him to the compan Batman gets wind of it, shows up the jack falls into the chemicals, and becomes the joker, the plot begins introductions to the world and characters have all been done at this point
We don't need to know what crissom does, because the movie is sorely about the Joker and his plot to poison the population using the same characters that turned him into the joker
We have no understanding what Batman and Dent are trying to accomplish by putting the mob away, because we have no idea what the mob does, it's never touched open other than being the mob, which is a vague term