Barcelona is Europe’s seventh vehicle attack in a year. What can be done? | Simon Jenkins

The white van has become the poor man’s guided missile. We must work out how to retain a balance between defacing cities and averting risk

Europe has endured seven acts of vehicle terrorism in the past year, and the Barcelona killer was apparently able just to walk away. What on earth can be done?

Events yesterday in Calatonia suggest that, as with the London Bridge attacks of last spring, police are getting better at responding to these acts of carnage. The swift erection of barriers and the s...