TBF we already have hugely invasive surveillance, at least here in the UK. Successive governments have cut policing and invested in cameras instead. It hasn't made us safer, but we kind of got boiled-frogged into living in a panopticon. There was a bit of negative publicity recently about use of facial recognition at choke-points like major public transport hubs - but it never really went anywhere. Make people feel scared and they will give up their rights for the illusion of security.