Boumer
LE
There's loads of other things - but I don't want to give ideas to mental people, so I'll stop now , but as for surveillance - there's counter measures you could take if you really wanted, all that takes is a bit of of out of the box thinking.
I think you might want to check again about WhatsApp.....
WhatsApp Security Vulnerability - Schneier on Security
But feel free to use it to chat about bringing down the state.