checkmate

As we are watching the film Cadillac records Ive noticed a few things that have brought questions to my mind. There are a number of instances for example where I feel like what is happening is more for the movie than what would occur in real life. One of these being that the owner of Cadillac records Lenard chess is getting away with fraud after he burned down his club, also muddy waters reaction to a change in his music style, the fact that willie dixion all but offers up his own musical talent for muddy to profit off of and how little walter is able to just shoot a man and drive away. Granted I havent seen the movie before so I dont know if any of them will face the repercussions but my question is just whether these things are based in fact or just convenient for the plot of the movie.