Initially the majority would find the highest ranking dub available and rally around him (because..of course).
Later on....I don't know. They'll definitely assume persecution, even if the media reports tax dodging, bankruptcy or some such. I presume most would eventually organise splinter groups of some kind, others would drift away - some would be devastated - many simply relieved. I think an awful lot would just keep on living because that's what we humans do. We carry on...Carry on J-Dubb🤔