To galvanize people is to cause them to be so excited or concerned about something that they are driven to action.

// The council’s proposal to close the library has galvanized the town’s residents.

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“The original Earth Day was the product of a new environmental consciousness created by Rachel Carson’s 1962 book, Silent Spring, and of public horror in 1969 that the Cuyahoga River in Ohio was so polluted it caught fire. … On April 22, 1970, some 20 million people attended thousands of events across America, and this galvanizing public demand led in short order to the creation, during Richard Nixon’s presidency, of the Environmental Protection Agency (1970), the Clean Air Act (1970), the Clean Water Act (1972), and the Endangered Species Act (1973), and much more after that.” — Todd Stern, The Atlantic, 6 Oct. 2024

Luigi Galvani was an Italian physician and physicist who, in the 1770s, studied the electrical nature of nerve impulses by applying electrical stimulation to frogs’ leg muscles, causing them to contract. Although Galvani’s theory that animal tissue contained an innate electrical impulse was disproven, the French word galvanisme came to refer to a current of electricity especially when produced by chemical action, while the verb galvaniser was used for the action of applying such a current (both words were apparently coined by German naturalist Alexander von Humboldt, who modeled them after the French equivalents of magnetism and magnetize). In English, these words came to life as galvanism and galvanize, respectively. Today their primary senses are figurative: to galvanize a person or group is to spur them into action as if they’ve been jolted with electricity.