This is the same type of logic used by police to justify civil forfeiture of cash in the USA. Drug dealers carry a lot of cash because they can't use banks, so anybody carrying a lot of cash must be a drug dealer and the cash must be illegal proceeds from drug dealing.

Not only has this logic severely damaged public trust in police, but it's been incrementally extended to seize money and property from many innocent and/or uninvolved people.

I'm not saying it will never happen, but we should not be punishing everyone for the misdeeds of the few. We should not be attributing anything to criminal activity that has not yet been proven to be criminal activity.