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ICE Taps into Nationwide AI-Enabled Camera Network, Data Shows
(www.404media.co)
This is a most excellent place for technology news and articles.
Might give them trouble in pre-dawn hours, might not depending on the design. I doubt the municipalities and government agencies pay much of anything for data usage.
Fun fact, most places the department of transportation pays nothing for the electricity that runs street lights - electric company just gives it to them unmetered - in exchange for good and valuable consideration like right of way usage.