I really hate this "going dark" narrative. They can track his purchases via his debit card, his movements via CCTV + cell tower records, intercept his emails..

I really hate this "going dark" narrative. They can track his purchases via his debit card, his movements via CCTV + cell tower records, intercept his emails... but there's one bit of his digital life that's inaccessible and we're "going dark?" We are burning bright with data. More data does not necessarily mean less terrorism. The English might be better served by posting some armed officers in high value areas. The French do this at major train stations and tourist spots like the Eiffel Tower. This doesn't stop terrorism, but vastly reduces the body count. Frankly, I think it's laughable that countries which resisted the Nazis will let 10 people dying make them consider rolling back civil liberties.