On Tuesday, a terrorist attempted to murder civilians in London.

The method of the attack was an increasingly familiar one: A car was used in an attempt to run down pedestrians. Fortunately, while the attacker struck a number of cyclists and pedestrians, none were seriously injured or killed. The terrorist then crashed into a security barrier protecting the Palace of Westminster, where the House of Commons meets. Authorities were originally concerned the car may have carried explosives, but it did not.