Jonathan Tobin labels the early public reaction to the Boston Marathon bombing “exemplary” in a column for Commentary magazine’s online outlet. Then Tobin contrasts this measured response to the grief-fueled approach to the Newtown school shootings.

While the Boston attack is, thank God, not on the same scale as the assault on the World Trade Center and the Pentagon on 9/11, the people who did this must also be tracked down and rooted out of their holes, be they somewhere in this country or, as in the case of al-Qaeda, on the other side of the earth. It is neither alarmist nor exploitive to say that if some group is behind this atrocity all its members and sympathizers must be considered dangerous enemies against whom the full force of American power must be used. There is, after all, a difference between a rational response to a specific threat and the desire to exploit a crime to promote a political response to an event that is not directly related to the crime in question.

This is instructive since so many of the people who are so insistent that Boston should not lead to a disproportionate government response to terrorism are often the same ones who have been asking to use Newtown as an excuse to enact far-reaching gun legislation.

Ever since the terrible events of December 14 when a madman murdered 20 children and six teachers at the Sandy Hook Elementary School, there has been a constant refrain in the national press for Americans not to let go of their grief. There is widespread disgust about the notion that Americans have started to think dispassionately about the crime rather than be impelled by their horror into agreeing with whatever gun restrictions the president has urged the nation to adopt, even if they would not prevent another such crime. After Newtown, the very idea of the country keeping calm about guns in the way they are now being asked to lower their temperature about terrorists–no matter who they might be–is anathema. In that case, grief and fear are considered appropriate drivers of policy by liberals while terrorism may not be.

Those seeking explanations for why the president’s gun agenda has run into a ditch only months after Newtown should contemplate how fragile a political tool fear and emotion can be. If the post-9/11 concerns about terror persisted for years after that event it was because, in spite of mistakes the government may have made, the fears that event whipped up were not out of proportion to the event that generated them. If other events are not capable of sustaining political agendas, it may be because the connection between these crimes and the suggested policy response is not as strong as some might wish it to be.