Very innovative idea. There is probably a law against writing/printing on money in the U.S., though.
It's sad to think that the organizers of this will probably be arrested for "conspiracy to deface government property" or something. Or, since they're also advancing a political message of 'fear', maybe it will be terrorism?
You don't get anywhere by whining and moaning on the streets that life isn't fair. You certainly don't get taken seriously by anyone.