First step is finding a way to educate the mainstream (including politicians) on the dangers of master keys and backdoors.

It is too easy for many politicians and security agencies to think that their master keys and backdoors won't ever fall into the wrong hands, that they're careful, etc. And if you point out the problem, they'll tell you they'll be even more careful.

Think about it from a non-techie perspective. I don't think most people even understand the concept that a message that goes from sender to recipient in WhatsApp can't be decrypted by Facebook, let alone by anyone else. I don't even know if there is a common analogue-world comparison you can draw, this is an utterly new concept for people who don't understand encryption.