Democratic lawmakers are demanding that Department of Homeland Security Secretary Kristi Noem define exactly who qualifies as a "domestic terrorist" as the agency deploys an expanding array of surveillance tools. The letter, led by Rep. Bennie G. Thompson, calls the agency's actions "blatantly unconstitutional."

This is about technology enabling authoritarianism, and it should concern everyone regardless of political affiliation.

Here's the problem: when the government won't define who they're surveilling, everyone is potentially a target. DHS has access to facial recognition databases, social media monitoring tools, cell phone location data, and AI-powered analytics that can identify "patterns" of suspicious behavior. These are powerful capabilities. The question is who they're being used against.

The lawmakers' letter points out what should be obvious: you can't deploy mass surveillance infrastructure against "domestic terrorists" without defining what that term means. Is it violent extremists planning attacks? Sure, everyone agrees on that. Is it protesters? Journalists? Political opponents? The silence is telling.

I covered surveillance tech as a reporter and saw this playbook before. Build the infrastructure first, figure out the oversight later. By the time lawmakers start asking questions, the systems are already deployed, the contracts are signed, and rolling them back becomes "impossible" because of operational necessity.

The technology here is sophisticated. DHS has tools that NSA would have envied a decade ago. AI can analyze social media posts to predict "radicalization." Facial recognition can track individuals across cameras in multiple cities. Data brokers sell location histories that show where you've been down to the meter.

None of this technology is inherently evil. Used properly, with oversight and clear legal boundaries, some of it might even be legitimate. But "trust us, we're only using it on the bad guys" has never been an acceptable framework for civil liberties.

The lawmakers are right to push back. Democracy requires constraints on government power, even - especially - when that power is wrapped in sophisticated technology. If DHS won't define their targets, then every citizen is a potential suspect.

The technology is impressive. The question is whether anyone should have it without accountability.