I'd say the first day would see unprecedented looting if shit wasn't being summarily destroyed. Maybe half or less would actually fight against an existential threat, but the other half would be worried about basic survival, The other half would need to split their resources between other humans, basic survival, and a threat to humanity.
If it's a singular event, the "9/11" mindset could maintain control for a long time, though.
I'd say the first day would see unprecedented looting if shit wasn't being summarily destroyed. Maybe half or less would actually fight against an existential threat, but the other half would be worried about basic survival, The other half would need to split their resources between other humans, basic survival, and a threat to humanity.
If it's a singular event, the "9/11" mindset could maintain control for a long time, though.