According to the FBI you might have found evidence of a terrorist plot.
A series of fliers distributed to companies around the United States by the FBI and the Bureau of Justice Assistance appear to give workers and business owners exactly this advice.
The fliers, as highlighted by the miscellania blog BoingBoing, are intended to help various businesses from hobby shop owners to car rental services identify suspicious people who might be involved in terrorist activity.
Using cash for small purchases like a cup of coffee, gum and other items is a good indication that a person is trying to pass for normal without leaving the kind of paper trail created using a debit or credit card for small purchases.
The most recent update asks coffee shop owners, baristas and other customer-service specialists to be on the lookout for the enemy who walks among us (who evidently has been reanimated from the graves of the 1950s Red Scare era of blacklisting and Communist-baiting or the KGB’s constant witch hunt for capitalist sympathizers or people who resent being witch-hunted for their political beliefs).
They have been collected online by the Public Intelligence collaborative research project, and are not normally released en masse by the FBI.
“Secrecy is maintained not to keep the opposition . . . from knowing what’s going on, because the enemy usually does know. Secrecy exists to keep you, the American public, from knowing what is going on, because in many ways you are the real enemy.”
- Victor Marchetti, Former Special Assistant to the Deputy Director of the CIA