A few thousand of them. All the people who committed the murders were killed, and most were from Saudi. Did that justify invading Iraq and losing a few thousand more, at a cost of trillions?
All of the murderers were also male, and middle-eastern. Does that justify molesting toddlers and old white people at the airport?
Does the fact that a loony shoots up a school justify giving up our firearms?
How many liberties are you willing to give up every time some insane person commits a murder?
point 1 - No, it did not justify ending Saddam Hussein's exestencial threat to the United States, that was unique and self sustaining.
point 2 - Everyone was groped and molested at the airport 20+ years before 9/11. X-rays and metal detectors are nothing new. For some reason when we gave therm a sweater vest and a $2 an hour raise it became an issue.
point 3- no silly
point 4 - none, and I don't believe anybody was denied liberty in Mass.