The fifth anniversary of the 7/7 London train bombings shows that control of the investigative and judicial processes along with media compliance equals getting by with murder. The British public just was not serious enough about the 'war on terror' and had to be taught a lesson. 9/11 wasn't good enough, it had to be close to home.
The use of terrorism in the 20th century to achieve means to an end reached critical mass in Israel with the Irgun and other groups. Once upon a time even the elite insiders in the media reported on this as a matter of fact calling it a model for 'liberation.'