Fair statement but it is generally accepted that extraordinary measures, like extraordinary claims require extreme evidence. That's just not the case here. To paraphrase Ben Frnaklin "Those who would give up liberty, to purchase a little temporary Safety, deserve neither liberty nor safety." I think the corollary is that we actually get neither liberty nor safety.
The interesting thing is that the laws being created to protect against such extreme attacks will be used against the people when they are controlled by an extreme group.
That's how radicalization works, a pretty well-defined tactic as I understand it:
How do you get free, prosperous, safe people to give all that up for what you offer? It sounds almost impossible. You manufacture fear and division - look at terrorism, or the uses of demonization in many places - and then they may be willing to change.
Remember that Eisenhower said, 'the only thing we have to fear is fear itself'. Eisenhower, who led the militaries of West through arguably the greatest crisis in their history, who was leading the West through the Cold War. He knew crisis, and that is what he said. That's what genuine leaders do.
Those who use spread fear and radicalization are not after security and freedom, but after power.