The trouble is that most conventional ways of building a new service are trivial to block. What is needed now is unstoppable messaging and social networking built on top of existing services and protocols that won't be blocked right away, services with more legal protection - like email with GPG, or some kind of steganographically encrypted layer on top of Instagram.

Imagine all I ever posted was cat pics... unless I have your public key and then all of a sudden those pics are decoded into messages of dissent

I am speaking beyond services, you need allies who are willing to come to each other’s aid, especially financially, but also for things like physically relaying data from place to place if that is ever needed. And for more mundane things like watching your house when you are out of town. Offline networks are going to become much more critical.