Fighting this the wrong way
The freedom of a nation and national security will always outweigh individual freedom. This is why electronic surveillance has been going on over 100 years in many different forms without any success to do away with it.
The fight shouldn't be against the use of surveillance, it should be to increase penalties and sentences against those who misuse surveillance technology and the intel information from it. Ensure directors and supervisors are held responsible for any misuse (no matter how small) with prison sentences and you'll see strict policies and procedures in place to restrict, account and record any use just to cover their ass. You'll also see it will only be used when absolutely necessary.
Not to mention, it's difficult for a politician to tell their constituents they aren't a proponent of accountability and transparency.