Where were you when the lights went out? That line became famous after the 1977 blackout in New York City. This power outage was caused by lightning and lasted for up to two days, depending on which part of New York you lived in. While in this case the power grid failure was a freak incident due to faulty backup equipment, it is still famous for the havoc it wreaked throughout the city—including looting and arson—during a time when national morale was already low.

https://blog.malwarebytes.com/security-world/business-security-world/2018/12/compromising-vital-infrastructure-power-grid/