By use of the Raspberry pi? For example creating a software program that will allow one raspberry pi to talk to another Raspberry pi and allow info to be transferred between in what ever way to transfer the data needs to flow but also allow the sd cards between all the raspberry pies to act like one server so if one raspberry pi runs out of data it can transfer that data to the next raspberry pi that as data available. The raspberry pi network can be made of raspberry pis that are nailed or screwed down to a public street light or electrical pole and can communicate by wifi with an antenna or by laser. Other communications that could go farther would be awesome too. And could be powered by a solar cell and rechargeable batteries. Also because its the outer net it should be made in a way that makes it impossible to find the sender. It should be made with no IP addresses. To support freedom of speech.