Look at this website. It’s in Dutch, so you might need some translation. https://decorrespondent.nl/209/nee-je-hebt-wel-iets-te-verbergen/23fc6e9d-f667-0377-1675-7b5e7bde60cc

Talk to people who are open to new information. Otherwise, "ok then" is fine.

ask them if they would say the same to an activist from an oppressive country

Ok Mr. Trump, good deal. Yeh talked me into it

Lot of folks here making the "nothing to hide? Great show me your browsing history" type arguments.

I think this isn't really arguing in good faith. There's a big difference between a personal friend knowing something about you, and a faceless algorithm knowing something about you. The two cases are different; it's fair to argue about how one is better or worse, but they are different.

I say that they're mind set while fine for them will negatively effect society. This often turns into a tangent.

I will also ask them for they're personal and work emails to log in.

The police recomend you hide your belongings when you leave you car. So you should probably reconsider that.

"Unlock your phone and give it to me"

That can change in an instant if the government ever decides to outlaw something you aren't hiding.