Environmental activist Erin Brockovich has joined the fight against the proliferation of AI data centers. left

Big Tech is expanding into communities across the country — and they aren't all that happy about it.

Many residents in cities and towns where tech companies are looking to build large data centers to power their AI products are mobilizing against them, concerned about a possible drain on water supplies, a surge in electricity costs, and a decline in their overall quality of life.

Now, legendary environmental activist Erin Brockovich, famously played by Julia Roberts in the 2000 film about her work, has joined the fight.

Brockovich said on a recent episode of "The Jim Acosta Show" that communities are angry because they feel shut out of the decisions being made in their own backyards — and that the projects are being "shoved down their throat in secrecy."

Brockovich said that residents learn about projects in the proposal stage, only to find that local officials are limited in what they can say…