 The legal moralist notion of defeaters—the conditions that can potentially defeat a prima facie reason to impose legal coercion on the basis of moral wrongdoing—should not be thought of as closed, but rather as flexible and subject to evolution or change. The notion fits comfortably with an established set of considerations that have been developed since the 1960s, based on the “crime tariff” and other mechanisms at work in the criminal law (Packer 1964, 1968; Moore 1997: 664). The idea of the crime tariff is that certain kinds of (perceived) wrongful behaviour will be engaged in, one way or another, whether it is criminal or not. That, of course, is not a conclusive objection to criminalization. If it were, the criminalization of murder or theft would be ruled out. However, if one looks at the predictable effects of criminalization of given wrongful conduct, it may make matters still worse than staying the hand of the criminal law. For one effect of criminalization is that the price of products (for example dangerous drugs) or services (for example sex work) will go up and will attract suppliers willing to break the law systematically and introduce a plethora of criminal gangs into societies, among other effects. The result may be worse than leaving well (or quite bad) alone. Michael Moore, for example, writes: