[NorthMountain]

In the example of Anne Frank, given in the OP, the proper response would be no response.

The Gestapo would not have accepted silence as a response. A modern-day equivalent in this country won't accept silence either.

[ShadowAce]

What they accept is their decision. What you provide is yours.

[painter]

In the example of Anne Frank, given in the OP, the proper response would be no response.

The Gestapo would not have accepted silence as a response. A modern-day equivalent in this country won't accept silence either.

I'll go one further no response would be an admission to the Gestapo that you DID know and not telling. Resulting in being forced to tell.