Suspected is the key word. Brandon Mayfield was suspected, had his rights violated, and was later exonerated. "Oops, sorry we used our expanded powers to violate your rights as a United States citizen, but you were after all a terror suspect, so you really didn't have any rights." The government has had to apologize to 12 other people for this, too.
Imagine one day being picked up and locked away, strip searched, put into solitary, no access to a judge or lawyer, no bail hearing, confined until the government decides its done with you. It's legal now. Hopefully, someone will find out what happened and petition the court for your release so the government doesn't sit on you too long.
I think you fear our government more than you fear al Qaeda. It's hard for me to understand that...
Enemies come and go. My children, their children, etc., will be affected by any liberties lost in the name of temporary security.