I'm not. You seem to missing the point: that point being, we already have given up many aspects of our 4th amendment rights if not outright, then by legislation sleight of hand and underhanded deals. So getting all up in arms about FISA is about the same as calling the police because your neighbor dog take a dump in your yard while the burglars were stealing you blind out your front door.
are we just supposed to give up and surrender all rights because of an irrational fear of Muslims?
Of course not, surrender ALL of our rights is a strawman argument. Nobody is proposing that.
FISA is a tool of the government to protect the citizens. There are rules and regulation in place to protect our rights Can they be abused ? Of course, but we weigh the difference between another potential attack or some government worker making a mistake.
Last time I looked AQ didn't tear up their Fatwa's and start singing Kumbaya