Also because people come together during major crises.

Since COVID I no longer believe this. Where I live, people immediately started hoarding essentials, threw low-paid retail workers under the bus, refused to follow even the most basic precautions to keep others safe (and had full-blow childish meltdowns and screamed in the faces of anyone who tried to ask them to comply), overwhelmed the healthcare system unnecessarily, burned down cell phone towers etc. Just a complete orgy of idiotic fuckery right from the start.