The rally seems to havebeen a victim of rising costs, which everyone faces; but the blame for the public firework display’s cancellation is placed squarely on the so-called “Martin’s Law.”
If many big events simply become untenable for that, by demands that cannot be met or which simply deter people from attending, then I am afraid the terrorists as a whole, of any cause or none, will have the upper hand. If they are still determined to commit mass murder such laws will not stop them. They would just find other targets.