It is the kind of mistake that is easily avoided by preferring facts to polemical point-scoring and conducting online debate ever mindful that aggressive language has consequences. To be a politician in the public eye is now to run the risk of routine digital pillory. Women, in particular, are subjected to a relentless, venomous barrage. This is frightening for the targets and distressing for their families. It is a disincentive to anyone considering running for office. Being prepared to withstand abuse and death threats should not be the qualifying threshold for a career in politics.