If you are customer of the bank there should be no questions asked if you want any amount of cash. If they do not have it on hand they can tell you to come back in a few days when it is arranged. Withdrawing your own money is not suspicious regardless of the amount. These rules are designed to spy on people for the government, it has nothing to do with crime. The government is the biggest criminal organization there is, by leaps and bounds.

If you have been found guilty of a crime and it has been proven that the funds in the bank are the result of that crime then action is justifiable. Otherwise it is a a violation of your rights to deny you access to your own money. It is a tyrannical expansion of state power, when the state spends money there should be more scrutiny as it is most likely involved in massive crimes.