[Sephiroth]

Why are we dwelling on the Nazi aspect? The UK is in danger of turning into a police state to some degree, adequately demonstrated in recent months. Unlike the Nazi police state, our statute underpinning current police powers is fuzzy and imprecise.
So we have the police using their discretion.

If the police go too far and breach the policing by consent principle on more than the isolated occasion, then we tend towards a police state of one sort. No gas chambers, no boncentration bamps (props Monty Python), but restrictions on freedom, punishment by imprisonment or fine for ordinary people, at the whim of the police and then the courts.

Vaccine passports open the door for other keep you in check mechanisms. Once a restriction is permanently legal, government, being *******s, won't give that freedom back. If a country won't let you in without a vaccine passport, then it's their loss.