The department has sent Google, Meta and other companies hundreds of subpoenas for information on accounts that track or comment on Immigration and Customs Enforcement, officials and tech workers said.
Agents use facial recognition, social media monitoring and other tech tools not only to identify undocumented immigrants but also to track protesters, current and former officials said.
Executives, investors and engineers are speaking out against the Trump administration after the killings of Alex Pretti and Renee Good in moves reminiscent of Silicon Valley a decade ago.
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