If a certain group of people think that it should be their right to take others rights away and turn society into a dystopia for perceived security, then for the same reason it should be other individuals rights to assert that their rights should be protected by taking the first group's rights away to install or do whatever they think they can do for convenience/security's sake.
This includes "ancestry tests", security cameras with AI in them, upload IDs to "verify", and even social media where you are allowed to upload pictures with others in them.
And since we "supposedly" live in a democracy, we should be allowed to have a vote to decide on this, the group that wins is the majority, right? I don't understand why we're allowing our rights to erode before we have an informed election about this, in democracies.
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What right is being taken away? Nobody ever had the right to not be recorded in public.
Furthermore surveillance isn't just an all or nothing thing. For example, the government can record your activities in public without a warrant, but they can't subpoena your phone calls without a warrant. That degree of surveillance has more checks and balances.
How you somehow try to go from recording people in public to "ancestry tests" is a pretty nonsensical argument.
> And since we "supposedly" live in a democracy, we should be allowed to have a vote to decide on this, the group that wins is the majority, right?
No, you'd have to win much more than the majority to change the constitution, which defines a lot of privacy rights. But if you have enough votes, then sure you could change the constitution.