Right now, there's a new ad campaign making its rounds of the TV channels, and it features people who are asking the public to report Medicare fraud. Well, how about a joke rebuttal ad from Medicare fraudsters encouraging, nay, threatening the public into keeping silent about their activities? People in silhouette with disguised voices could say things like: "People who engage in Medicare fraud are just like you: we're your friends, your neighbors, the people you see out on the street every day; and we know who you are, and we know where you live, too. So we can always reach you when we want to. So when it comes to Medicare fraud, or actually, any criminal activity whatsoever: no snitching. Remember: if you see something, say nothing, or else. A courtesy reminder from your friendly neighborhood criminal underground of fraudsters, thieves, and scam artists." (It might be fun for a different person's silhouette to speak one phrase out of this statement each, so it's voiced by an anonymous collection of people for maximum intimidation value.)
Here's the Medicare fraud ad I'm talking about: