If "fighting terrorism" and preventing the attendant loss of life is what's most important, then, heck, these same Tyrannical techniques could be applied to fighting everyday criminality, since such criminality causes far more loss of life than all terrorism combined.
If I recall correctly, the terrorists will have already won if they cause America to morph into some kind of totalitarian police state which is at perpetual War. Part of the goal is to combat terror without destroying our Free society.
It seems that some have, hysterically or otherwise, totally lost sight of that consideration. Fear is a potent tool for convincing people to surrender essential liberty.
Thank you, kind sir. Your observations are spot-on.