Amongst the political exploitation of Sunday's tragedy to attack @AlboMP has anyone suggested what measures the government could have taken which would have prevented two lone-wolf gunmen loosely affiliated with or inspired by Islamic State from undertaking their murderous spree? Are people seriously arguing that restrictions on free speech, protest marching, and not diplomatically recognising Palestine, would have stopped the radicalisation of the perpetrators? The bitter reality is that very little that could have been done to stop them. Every society, including the most peaceful and liberal, contain extremists and psychopaths. It is almost impossible to identify and stop them before they commit their appalling crimes. So much facile ink is currently being spilled on commentary for base political motives, and so little serious and useful analysis is on offer.