RFID cards bother me... but some radio identifiers sprinkled at random to simply track largely anonymous people don't seem so bad, unless you are a person involved in physical illicit activities.
As long as these things remain largely random and designed for tracking stuff like ticket sales, etc... well, what could they potentially do besides let some government hack know that I'm taking a detour in an alley for a leak? And if these really are harmful, well, a government is only as powerful as it's following. Anger a public enough and you'll have a really, really big insurgency. You do have the military, but most of our soldiers- the people actually holding the guns, not telling them where to shoot- are regular people.
If I'm missing some crucial detail here, please let me know...