The argument is, if it were your child who was kidnapped......

(note we're on the same page I'm just ranting out loud) Yeah lets take worst case scenarios that dont actually happen in any numbers worth concerning oneself over. if you're worried just design a radio chip for kids arms that will ping cell towers and inject them with that. there your kids are safely trackable.

this not only wouldnt reduce everyone elses privacy and security from the state but would cost less.