Comment by defrost
There's a scene in which an aide for a city politician is stopped leaving known drug dealing actors and the car is found to have bag stuffed with a large amount of cash which is seized.
The point moving forward is will anybody claim the cash and offer an explanation as to where it came from.
The above "you'll know why" appears to carry an implicit "because all cash with no receipt is criminal proceeds".
The problem with that is stories abound of Police seizing cash and other assets and keeping them, spending money, auctioning goods, etc that were never criminal proceeds .. or rather never proved to be criminal proceeds.
Okay, but there's a world of difference between a large amount of cash that nobody wants to claim because police know it's drug money versus an innocent person that the police have stolen money from without any true suspicion and the person has been fighting in the courts for years to get their money back.