Another popular-meme way is knocking out the power grid. Take out enough of it and rapid recovery becomes very difficult, soon disrupting & stopping commerce, w

Another popular-meme way is knocking out the power grid. Take out enough of it and rapid recovery becomes very difficult, soon disrupting & stopping commerce, water, food, gas, etc distribution which some 99% of the US population critically relies on. That often postulated as prompting mass looting & starvation, which one could reasonably assume terminates 3% of the population.