  One response is that a researcher who benefits from the destruction of embryos need not sanction the act any more than the transplant surgeon who uses the organs of a murder or drunken driving victim sanctions the homicidal act (Curzer 2004). But this response is unlikely to be satisfactory to opponents of HESC research. There is arguably an important difference between the transplant case and HESC research insofar as the moral wrong associated with the latter (a) systematically devalues a particular class of human beings and (b) is largely socially accepted and legally permitted. Opponents of HESC research might suggest that the HESC research case is more analogous to the following kind of case: Imagine a society in which the practice of killing members of a particular racial or ethnic group is legally permitted and generally accepted. Suppose that biological materials obtained from these individuals subsequent to their deaths are made available for research uses. Could researchers use these materials while appropriately distancing themselves from the wrongful practice? Arguably, they could not. There is a heightened need to protest moral wrongs where those wrongs are socially and legally accepted. Attempts to benefit from the moral wrong in these circumstances may be incompatible with mounting a proper protest (Siegel 2003).