When, if ever, is it right to use recent horrific crimes to push for political changes you wanted anyway?

I was struck by a particular contrast between two opinion columns that appeared in today’s Guardian. Both made reference to crimes in which many children were killed.

The first column I would like to look at, written by Zoe Williams, refers to the crime described here. Mick Philpott had lived in a ménage à trois with his wife, Mairead, his mistress Lisa Willis and the eleven children the two women had bore him. When Lisa Willis walked out on this arrangement, taking her five children – and their welfare benefits – with her, the Philpotts and another man set a fire at the Philpott house with the aim of framing Ms Willis for it, which would help him regain custody of their children and the income stream that came with them, and also so that Philpott could be seen to rescue the other six children who still lived in that house. It would also aid him in his custody battle to be hailed a hero. As it turned out, he could not rescue them. All six died in the fire. The three conspirators have been jailed for multiple manslaughter, with Mick Philpott receiving the longest sentence as the dominant figure in the group.

The Daily Mail published an article headed “Vile product of Welfare UK: Man who bred 17 babies by five women to milk benefits system is guilty of killing six of them.”

Zoe Williams of the Guardian was deeply angered by this. Her Guardian column has the title “Don’t get mad about the Mail’s use of the Philpotts to tarnish the poor – get even.” Ms Williams writes,

It is vitriolic, illogical depersonalisation to ascribe the grotesqueness of one wild, unique crime to tens of thousands of people on benefits. When any section of society is demonised on irrational grounds we have to take that seriously, so I will complain to the Press Complaints Commission, and I hope you will too.

The readers’ comments share Ms Goodman’s outrage, as does a similar comment piece about the same crime by Graeme Cooke which says,

There’s nothing wrong with moral principles in welfare policy but making political capital from an appalling crime is offensive.

The second, contrasting Guardian column, by Amy Goodman, referred to the gun massacre of twenty children and six adults carried out by Adam Lanza at Sandy Hook Elementary School in December 2012. That crime and its legal and moral implications were discussed at length in this blog at the time it occurred.

Amy Goodman’s column has the title “It’s time for the majority to move on gun control” and includes the words:

The moment to pass gun control was when the national attention was riveted on the massacre at Sandy Hook, the brutal slaying of 20 children and six adults. Before the broken bodies of those victims fade from memory, our broken body politic must be mended. What is needed is a vigorous grassroots movement, to provide the leadership so lacking in Washington DC.

I do not wish to simply jeer at the inconsistency of the reaction of the Guardian’s writers and readers. They could quite fairly throw the same jibe back at us – I assume that most readers of this blog oppose gun control and objected to the demonisation of American gun owners because of one grotesque crime on much the same grounds as Ms Williams objects to the demonisation of British welfare claimants for one grotesque crime. I post this to ask, not answer, the question, when is it offensive and when is it a moral necessity to make political capital over the bodies of dead children?