The US FEMA site has a library of decent information to deal with many different types of emergencies. The notable lack of self-defense advice and civil collapse scenarios is unfortunate but the rest of the information is decently complete for many scenarios.

I think that one of the real difficulties that governments have is admitting that they will fail to protect their citizenry. The tone of all government publications is "here is how to cooperate with the government so that we can better protect you".

Information on "what to do when Big Brother is missing, dead or your enemy" is not to be found from Big Brother.