You know something is changing in American mores when the supposed leader of the culture wars from the right, Sarah Palin, declares that smoking pot is “a minimal problem” and that “if somebody’s gonna smoke a joint in their house and not do anybody any harm, then perhaps there are other things our cops should be looking at to engage in.” Like many other pointless wars, the culture conflict has mainly resulted in exhaustion. Now the troops are laying down their arms and going home. More and more Americans, particularly in the youngest generation of adults, are shrugging at drug...