Why? This sort of thing is flashy but not a real danger you need to be concerned about (think shark attack not car crash), so even if you take the premise that

Why? This sort of thing is flashy but not a real danger you need to be concerned about (think shark attack not car crash), so even if you take the premise that mass surveillance could stop it (dubious), it's probably not worth paying much for, certainly not any abridgements of our rights.