A demonstrator holds a sign at a data center protest in Kenilworth, N.J., July 18, 2026. (Grade Solomon/The New York Times) By NICHOLAS KRISTOF Seven out of 10 Americans oppose data centers in their communities, according to Gallup, and they have good reason to be wary of artificial intelligence and all that comes with it. The data center debate sometimes is contested in the weeds of electricity prices, water supply and nondisclosure agreements, but more broadly it’s a proxy for distrust of…