Terrorists in the U.S.

we have had several terrorist attacks in the U.S. in and around the last decade. The most prominent ones were on the world trade centers in New York City. four commercial airliners were hijacked and two were crashed into the twin towers as well as one plane was crashed into the pentagon, and one landed in a field in Pennsylvania because the passengers and flight attendants attempted to gain control of the airliner. Nearly 3,000 people died in this attack. The attack was linked to the Al-Qaeda organisation and Osama Bin Laden. Al-Qaeda was waging a holy war against the us because a passage in the Koran stated "slay the pagans wherever ye find them." They belive that they should kill us because we "are the nation who, rather than ruling by the Shariah of Allah in its Constitution and Laws, choose to invent your own laws as you will and desire."
In responce to these attacks overall security went way up in America especially in Airports. Only people boarding flights could go through the security checkpoints and restrictions were put on what you could put in your bags, especially liquids. A law was also passed that allowed the government to evesdrop on phone calls and emails from the U.S. to overseas without a warrant.