I would regard circle work at that intersection, at that time and situation, note horse carriage was also waiting at the intersection amongst other people in numbers around the intersection vicinity, was effectively a terrorist act, no matter the origin of the assailant and whether he or she did anymore.
In another world's perception the pedestrians should have bolted at the site like looking at a lava flow and all crowds dispersed in panic where upon the military could have launched a missile from a fighter jet to take the vehicle out! The temporary crater in the road from the impact could have been addressed in a relatively short period, military operation, we move on!
