At 31m, Lois Stoner (Elizabeth Ashley) swings to her left after getting slapped on the left side of her face. She should have swung to her right. (Bonus: pausing the scene at the right moment reveals the handclap for this "slap")
Brady and Dekker kill Stoner inside a bank, which is a location filled with policemen. It would be more logical for the murder to happen somewhere other than inside a bank, perhaps on the street, to avoid being surrounded by law enforcement officers.