That was the real effect of 9/11 attacks, and this is the goal of actual terrorism. The Two Towers were only a tool, the death toll was so small it doesn't really matter. The US gets several WTC worth of deaths anually in traffic accidents alone.
What the 9/11 attack did is damage the core of Western principles and send the entire population of US into state of paranoia. The massive overreaction of US killed orders of magnitude more people than died in the attack and it is us, not terrorists, who are danger to our own freedoms.
What the 9/11 attack did is damage the core of Western principles and send the entire population of US into state of paranoia. The massive overreaction of US killed orders of magnitude more people than died in the attack and it is us, not terrorists, who are danger to our own freedoms.