It needs to be done on both fronts.

Privacy-conscious apps and communications tools need to be developed, and we need to build the consensus that privacy is important.

edit: Anyone know why Briar doesn't have the feature for known contacts to be a "courier" for other contacts?

Background: Briar is the encrypted messaging app that works over tor, local wifi and bluetooth. If Alice sends a message to Charles but she isn't connected, the app will hold it until it detects Alice and Charles are in proximity.

My desired feature: If Bob is a verified contact with both Alice and Charles, Briar should be able to hand the message from Alice to Bob, and then deliver it to Charles.